Attachment 635295 Details for Bug 871246 – File: backtrace

File: backtrace

backtrace (text/plain), 195.55 KB, created by Kerry on 2012-10-30 03:03:53 UTC

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Creator: Kerry

Created: 2012-10-30 03:03:53 UTC

Size: 195.55 KB

patch

obsolete

>warning: core file may not match specified executable file.
>[New LWP 31800]
>[New LWP 31871]
>[New LWP 31883]
>[New LWP 31894]
>[New LWP 31927]
>[New LWP 32055]
>[New LWP 32162]
>[New LWP 32325]
>[New LWP 31845]
>[New LWP 31892]
>[New LWP 31853]
>[New LWP 31869]
>[New LWP 31918]
>[New LWP 32028]
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>warning: "/usr/lib/debug/usr/lib64/libicudata.so.48.1.1.debug": separate debug info file has no debug info
>Core was generated by `python2 /bin/calibre'.
>Program terminated with signal 11, Segmentation fault.
>#0  0x0000003a0000003a in ?? ()
>
>Thread 14 (Thread 0x7fdf2a2f4700 (LWP 32028)):
>#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:86
>No locals.
>#1  0x0000003a07507575 in PyThread_acquire_lock (lock=0x7fdf1c98c750, waitflag=1) at /usr/src/debug/Python-2.7.3/Python/thread_pthread.h:321
>        success = <optimized out>
>        thelock = 0x7fdf1c98c750
>        status = <optimized out>
>        error = 0
>#2  0x0000003a0750b084 in lock_PyThread_acquire_lock (self=0x7fdf88642530, args=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:52
>        _save = 0x52b4a90
>        i = 1
>#3  0x0000003a074dd0e1 in call_function (oparg=<optimized out>, pp_stack=0x7fdf2a2f2ff8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4098
>        callargs = ()
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in method acquire of thread.lock object at remote 0x7fdf88642530>
>        w = <optimized out>
>        na = <optimized out>
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x72e03a8
>        x = <optimized out>
>#4  PyEval_EvalFrameEx (f=f@entry=Frame 0x72e01f0, for file /usr/lib64/python2.7/threading.py, line 243, in wait (self=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247f90>, acquire=<built-in method acquire of thread.lock object at remote 0x4247f90>, _Condition__waiters=[<thread.lock at remote 0x7fdf88642530>], release=<built-in method release of thread.lock object at remote 0x4247f90>) at remote 0x41bc7d0>, timeout=None, waiter=<thread.lock at remote 0x7fdf88642530>, saved_state=None), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x72e03b0
>        stack_pointer = <optimized out>
>        next_instr = 0x112e276 "\001|"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x72e0368
>        freevars = 0x72e03a8
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9eccf430
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112e214 "|"
>        names = ('_is_owned', 'RuntimeError', '_allocate_lock', 'acquire', '_Condition__waiters', 'append', '_release_save', 'None', '_note', '_time', 'True', 'min', '_sleep', 'remove', 'ValueError', '_acquire_restore')
>        consts = (None, 'cannot wait on un-acquired lock', '%s.wait(): got it', <float at remote 0x11247f0>, 0, 2, <float at remote 0x1124820>, '%s.wait(%s): timed out', '%s.wait(%s): got it')
>#5  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x78a1bd0, kwcount=0, defs=0x7fdf9ec5c968, defcount=1, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x52b4a90
>        x = <optimized out>
>        u = <optimized out>
>#6  0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf2a2f32a8, func=<function at remote 0x7fdf9ec61848>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#7  call_function (oparg=<optimized out>, pp_stack=0x7fdf2a2f32a8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec61848>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x78a1bc8
>        x = <optimized out>
>#8  PyEval_EvalFrameEx (f=f@entry=Frame 0x78a1a20, for file /usr/lib64/python2.7/Queue.py, line 168, in get (self=<Queue(unfinished_tasks=271908, queue=<collections.deque at remote 0x499b280>, maxsize=1, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247f90>, acquire=<built-in method acquire of thread.lock object at remote 0x4247f90>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247f90>) at remote 0x41bc750>, mutex=<thread.lock at remote 0x4247f90>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247f90>, acquire=<built-in method acquire of thread.lock object at remote 0x4247f90>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247f90>) at remote 0x41bc6d0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247f90>, acquire=<built-in method acquire of thread.lock object at remote 0x4247f90>, _Condition__waiters=[<thread.lock a...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x78a1bd0
>        stack_pointer = <optimized out>
>        next_instr = 0x112e449 "\001q="
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x78a1b98
>        freevars = 0x78a1bc8
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ecc1e30
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112e3f4 "|"
>        names = ('not_empty', 'acquire', '_qsize', 'Empty', 'None', 'wait', 'ValueError', '_time', '_get', 'not_full', 'notify', 'release')
>        consts = ("Remove and return an item from the queue.\n\n        If optional args 'block' is true and 'timeout' is None (the default),\n        block if necessary until an item is available. If 'timeout' is\n        a positive number, it blocks at most 'timeout' seconds and raises\n        the Empty exception if no item was available within that time.\n        Otherwise ('block' is false), return an item if one is immediately\n        available, else raise the Empty exception ('timeout' is ignored\n        in that case).\n        ", 0, "'timeout' must be a positive number", <float at remote 0x11244d8>, None)
>#9  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x505d558, kwcount=0, defs=0x7fdf9ecd0cc8, defcount=2, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x52b4a90
>        x = <optimized out>
>        u = <optimized out>
>#10 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf2a2f3558, func=<function at remote 0x7fdf9ec638c0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#11 call_function (oparg=<optimized out>, pp_stack=0x7fdf2a2f3558) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec638c0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x505d550
>        x = <optimized out>
>#12 PyEval_EvalFrameEx (f=f@entry=Frame 0x505d380, for file /usr/lib64/calibre/calibre/library/sqlite.py, line 250, in run (self=<DBThread(_Thread__ident=140596462176000, row_factory=False, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247c70>, acquire=<built-in method acquire of thread.lock object at remote 0x4247c70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247c70>) at remote 0x41bc850>, _Thread__name='Thread-9', _Thread__daemonic=True, _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247eb0>, acquire=<built-in method acquire of thread.lock object at remote 0x4247eb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247eb0>) at remote 0x41bc950>) at remote 0x41bc8d0>, results=<Queue(unfinished_tasks=271908, queue=<collections.deque at remote 0x499b2f0>, maxsize=1, all_tasks_done=<_Condit...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x505d558
>        stack_pointer = <optimized out>
>        next_instr = 0x1ad4756 "\\\003"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x505d4f8
>        freevars = 0x505d550
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x1a6e3b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x1ad4734 "y8\002|"
>        names = ('connect', 'True', 'requests', 'get', 'CLOSE', 'conn', 'close', 'tuple', 'iterdump', 'Exception', 'False', 'traceback', 'format_exc', 'DynamicFilter', 'create_function', 'getattr', 'range', 'OperationalError', 'str', 'prints', 'reprlib', 'repr', 'time', 'sleep', 'results', 'put', 'unhandled_error')
>        consts = (None, 'dump', 'create_dynamic_filter', 0, 1, 3, 'unable to open', 2, 'Unable to open database for func', <float at remote 0x1088548>)
>#13 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x50f5d80, kwcount=0, defs=0x0, defcount=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x52b4a90
>        x = <optimized out>
>        u = <optimized out>
>#14 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf2a2f3808, func=<function at remote 0x1ad7410>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#15 call_function (oparg=<optimized out>, pp_stack=0x7fdf2a2f3808) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x1ad7410>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x50f5d78
>        x = <optimized out>
>#16 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x50f5d80
>        stack_pointer = <optimized out>
>        next_instr = 0x112beea "\001Wn\a\001\004t\016"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec564b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112be44 "z\322\001|"
>        names = ('_set_ident', '_Thread__started', 'set', '_active_limbo_lock', '_active', '_Thread__ident', '_limbo', '_note', '_trace_hook', '_sys', 'settrace', '_profile_hook', 'setprofile', 'run', 'SystemExit', 'stderr', 'write', 'name', '_format_exc', '_Thread__exc_info', '_Thread__stderr', 'tb_frame', 'f_code', 'co_filename', 'tb_lineno', 'co_name', 'tb_next', '_Thread__exc_clear', '_Thread__stop', '_get_ident')
>        consts = (None, '%s.__bootstrap(): thread started', '%s.__bootstrap(): registering trace hook', '%s.__bootstrap(): registering profile hook', '%s.__bootstrap(): raised SystemExit', '%s.__bootstrap(): unhandled exception', 'Exception in thread %s:\n%s\n', 'Exception in thread ', ' (most likely raised during interpreter shutdown):', 'Traceback (most recent call last):', '  File "%s", line %s, in %s', '%s: %s', '%s.__bootstrap(): normal return')
>#17 0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf2a2f3a08, func=<function at remote 0x7fdf9ec625f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x52b4a90
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#18 call_function (oparg=<optimized out>, pp_stack=0x7fdf2a2f3a08) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec625f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x27de030
>        x = <optimized out>
>#19 PyEval_EvalFrameEx (f=f@entry=Frame 0x27ddeb0, for file /usr/lib64/python2.7/threading.py, line 524, in __bootstrap (self=<DBThread(_Thread__ident=140596462176000, row_factory=False, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247c70>, acquire=<built-in method acquire of thread.lock object at remote 0x4247c70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247c70>) at remote 0x41bc850>, _Thread__name='Thread-9', _Thread__daemonic=True, _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247eb0>, acquire=<built-in method acquire of thread.lock object at remote 0x4247eb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247eb0>) at remote 0x41bc950>) at remote 0x41bc8d0>, results=<Queue(unfinished_tasks=271908, queue=<collections.deque at remote 0x499b2f0>, maxsize=1, all_tasks_done=<_Condition...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x27de038
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecc7ba0 "\001Wn#"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x27de028
>        freevars = 0x27de030
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec563b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecc7b94 "y\016"
>        names = ('_Thread__bootstrap_inner', '_Thread__daemonic', '_sys', 'None')
>        consts = (None,)
>#20 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x41c15e8, argcount=1, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x52b4a90
>        x = <optimized out>
>        u = <optimized out>
>#21 0x0000003a0746d796 in function_call (func=<function at remote 0x7fdf9ec62500>, arg=(<DBThread(_Thread__ident=140596462176000, row_factory=False, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247c70>, acquire=<built-in method acquire of thread.lock object at remote 0x4247c70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247c70>) at remote 0x41bc850>, _Thread__name='Thread-9', _Thread__daemonic=True, _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247eb0>, acquire=<built-in method acquire of thread.lock object at remote 0x4247eb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247eb0>) at remote 0x41bc950>) at remote 0x41bc8d0>, results=<Queue(unfinished_tasks=271908, queue=<collections.deque at remote 0x499b2f0>, maxsize=1, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247cf0>, acquire=<buil...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/funcobject.c:526
>        result = <optimized out>
>        argdefs = <optimized out>
>        kwtuple = 0x0
>        d = 0x0
>        k = 0x0
>        nk = 0
>        nd = 0
>#22 0x0000003a07449a7e in PyObject_Call (func=func@entry=<function at remote 0x7fdf9ec62500>, arg=arg@entry=(<DBThread(_Thread__ident=140596462176000, row_factory=False, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247c70>, acquire=<built-in method acquire of thread.lock object at remote 0x4247c70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247c70>) at remote 0x41bc850>, _Thread__name='Thread-9', _Thread__daemonic=True, _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247eb0>, acquire=<built-in method acquire of thread.lock object at remote 0x4247eb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247eb0>) at remote 0x41bc950>) at remote 0x41bc8d0>, results=<Queue(unfinished_tasks=271908, queue=<collections.deque at remote 0x499b2f0>, maxsize=1, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247cf0>, acquire=<buil...(truncated), kw=kw@entry=0x0) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a0746d6e0 <function_call>
>#23 0x0000003a07458070 in instancemethod_call (func=<function at remote 0x7fdf9ec62500>, arg=(<DBThread(_Thread__ident=140596462176000, row_factory=False, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247c70>, acquire=<built-in method acquire of thread.lock object at remote 0x4247c70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247c70>) at remote 0x41bc850>, _Thread__name='Thread-9', _Thread__daemonic=True, _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247eb0>, acquire=<built-in method acquire of thread.lock object at remote 0x4247eb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247eb0>) at remote 0x41bc950>) at remote 0x41bc8d0>, results=<Queue(unfinished_tasks=271908, queue=<collections.deque at remote 0x499b2f0>, maxsize=1, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247cf0>, acquire=<buil...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/classobject.c:2578
>        self = <DBThread(_Thread__ident=140596462176000, row_factory=False, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247c70>, acquire=<built-in method acquire of thread.lock object at remote 0x4247c70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247c70>) at remote 0x41bc850>, _Thread__name='Thread-9', _Thread__daemonic=True, _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247eb0>, acquire=<built-in method acquire of thread.lock object at remote 0x4247eb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247eb0>) at remote 0x41bc950>) at remote 0x41bc8d0>, results=<Queue(unfinished_tasks=271908, queue=<collections.deque at remote 0x499b2f0>, maxsize=1, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247cf0>, acquire=<built...(truncated)
>        klass = <optimized out>
>        result = <optimized out>
>#24 0x0000003a07449a7e in PyObject_Call (func=func@entry=<instancemethod at remote 0x3bc5f50>, arg=arg@entry=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a07457fd0 <instancemethod_call>
>#25 0x0000003a074d71c7 in PyEval_CallObjectWithKeywords (func=<instancemethod at remote 0x3bc5f50>, arg=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3967
>        result = <optimized out>
>#26 0x0000003a0750b432 in t_bootstrap (boot_raw=0x3d20450) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:614
>        boot = 0x3d20450
>        tstate = 0x52b4a90
>        res = <optimized out>
>#27 0x00000039e4007d14 in start_thread (arg=0x7fdf2a2f4700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf2a2f4700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140596462176000, 4901417157404991259, 0, 248623792128, 140596462176000, 0, -4919337403765678309, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#28 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 13 (Thread 0x7fdf2bdfb700 (LWP 31918)):
>#0  0x00000039e34e8bcf in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
>        resultvar = <optimized out>
>        oldtype = 0
>        result = <optimized out>
>#1  0x00000039e7c47af4 in g_main_context_poll (n_fds=2, fds=0x7fdf20002bc0, timeout=-1, context=0x7fdf200009c0, priority=<optimized out>) at gmain.c:3440
>        poll_func = 0x39e7c55910 <g_poll>
>#2  g_main_context_iterate (context=context@entry=0x7fdf200009c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3141
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 2
>        allocated_nfds = <optimized out>
>        fds = 0x7fdf20002bc0
>#3  0x00000039e7c47c14 in g_main_context_iteration (context=0x7fdf200009c0, may_block=1) at gmain.c:3207
>        retval = <optimized out>
>#4  0x0000003aedba44e6 in QEventDispatcherGlib::processEvents (this=0x7fdf200008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
>        d = 0x7fdf20000900
>        canWait = <optimized out>
>        savedFlags = {i = 0}
>        result = false
>#5  0x0000003aedb7510f in QEventLoop::processEvents (this=this@entry=0x7fdf2bdfae30, flags=...) at kernel/qeventloop.cpp:149
>        d = 0x7fdf20002af0
>#6  0x0000003aedb75398 in QEventLoop::exec (this=0x7fdf2bdfae30, flags=...) at kernel/qeventloop.cpp:204
>        d = 0x7fdf20002af0
>        locker = {val = 84068200}
>        app = 0x2663fa0
>#7  0x0000003aeda78650 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
>        d = 0x502c6e0
>        locker = {val = 84068200}
>        eventLoop = {<QObject> = {_vptr.QObject = 0x3aedec94f0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc4e460 "QObject", data = 0x3aedc4e500, extradata = 0x3aedec6a20}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedb8de70 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, d_ptr = {d = 0x7fdf20002af0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc573a0 "Qt", data = 0x3aedc5acc0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x3aedec6a00, stringdata = 0x3aedc60e20 "QEventLoop", data = 0x3aedc60e40, extradata = 0x3aedec9580}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedbd5b10 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}}
>        returnCode = <optimized out>
>#8  0x0000003aedb55b2f in QInotifyFileSystemWatcherEngine::run (this=0x501c860) at io/qfilesystemwatcher_inotify.cpp:248
>        sn = {<QObject> = {_vptr.QObject = 0x3aedec97b0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc4e460 "QObject", data = 0x3aedc4e500, extradata = 0x3aedec6a20}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedb8de70 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, d_ptr = {d = 0x7fdf20002920}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc573a0 "Qt", data = 0x3aedc5acc0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x3aedec6a00, stringdata = 0x3aedc62020 "QSocketNotifier", data = 0x3aedc62060, extradata = 0x3aedec9840}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedbd5f90 <QSocketNotifier::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, sockfd = 26, sntype = QSocketNotifier::Read, snenabled = true}
>#9  0x0000003aeda7b5eb in QThreadPrivate::start (arg=0x501c860) at thread/qthread_unix.cpp:307
>        __clframe = {__cancel_routine = 0x3aeda7a5d0 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x501c860, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x501c860
>        data = 0x502c7b0
>#10 0x00000039e4007d14 in start_thread (arg=0x7fdf2bdfb700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf2bdfb700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140596490516224, 4901417157404991259, 0, 248623792128, 140596490516224, 1, -4919334522379493605, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#11 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 12 (Thread 0x7fdf8d71c700 (LWP 31869)):
>#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:166
>No locals.
>#1  0x00007fdf99d8077d in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7fdf9a76a980) at wtf/FastMalloc.cpp:2495
>No locals.
>#2  0x00007fdf99d80889 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at wtf/FastMalloc.cpp:1618
>No locals.
>#3  0x00000039e4007d14 in start_thread (arg=0x7fdf8d71c700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf8d71c700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140598127478528, 4901417157404991259, 0, 248623792128, 140598127478528, 32768, -4919533825505026277, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#4  0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 11 (Thread 0x7fdf8e1c5700 (LWP 31853)):
>#0  0x00000039e34ea9e3 in select () at ../sysdeps/unix/syscall-template.S:82
>No locals.
>#1  0x00007fdfa0838fbd in floatsleep (secs=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:943
>        _save = 0x3ccf460
>        t = {tv_sec = 0, tv_usec = 12712}
>        frac = <optimized out>
>#2  time_sleep (self=<optimized out>, args=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:206
>        secs = 0.032000000000000001
>#3  0x0000003a074dd0e1 in call_function (oparg=<optimized out>, pp_stack=0x7fdf8e1c3ff8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4098
>        callargs = (<float at remote 0x69d9d48>,)
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in function sleep>
>        w = <optimized out>
>        na = <optimized out>
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x6eefec8
>        x = <optimized out>
>#4  PyEval_EvalFrameEx (f=f@entry=Frame 0x6eefd10, for file /usr/lib64/python2.7/threading.py, line 262, in wait (self=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f630>, acquire=<built-in method acquire of thread.lock object at remote 0x343f630>, _Condition__waiters=[<thread.lock at remote 0x3e2d770>], release=<built-in method release of thread.lock object at remote 0x343f630>) at remote 0x396ea90>, timeout=<float at remote 0xd863eb8>, waiter=<thread.lock at remote 0x3e2d770>, saved_state=None, endtime=<float at remote 0x7fdf6c0699b0>, delay=<float at remote 0x69d9d48>, gotit=False, remaining=<float at remote 0x4a77898>), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x6eefed0
>        stack_pointer = <optimized out>
>        next_instr = 0x112e2fb "\001q\214"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x6eefe88
>        freevars = 0x6eefec8
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9eccf430
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112e214 "|"
>        names = ('_is_owned', 'RuntimeError', '_allocate_lock', 'acquire', '_Condition__waiters', 'append', '_release_save', 'None', '_note', '_time', 'True', 'min', '_sleep', 'remove', 'ValueError', '_acquire_restore')
>        consts = (None, 'cannot wait on un-acquired lock', '%s.wait(): got it', <float at remote 0x11247f0>, 0, 2, <float at remote 0x1124820>, '%s.wait(%s): timed out', '%s.wait(%s): got it')
>#5  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=2, kws=0x6777c38, kwcount=0, defs=0x7fdf9ec5c968, defcount=1, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x3ccf460
>        x = <optimized out>
>        u = <optimized out>
>#6  0x0000003a074dc113 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0x7fdf8e1c42a8, func=<function at remote 0x7fdf9ec61848>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#7  call_function (oparg=<optimized out>, pp_stack=0x7fdf8e1c42a8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec61848>
>        w = <optimized out>
>        na = 2
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x6777c28
>        x = <optimized out>
>#8  PyEval_EvalFrameEx (f=f@entry=Frame 0x6777a80, for file /usr/lib64/python2.7/Queue.py, line 177, in get (self=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bba600>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f630>, acquire=<built-in method acquire of thread.lock object at remote 0x343f630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f630>) at remote 0x396ee90>, mutex=<thread.lock at remote 0x343f630>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f630>, acquire=<built-in method acquire of thread.lock object at remote 0x343f630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f630>) at remote 0x396e750>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f630>, acquire=<built-in method acquire of thread.lock object at remote 0x343f630>, _Condition__waiters=[<thread.lock at rem...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x6777c38
>        stack_pointer = <optimized out>
>        next_instr = 0x112e4b9 "\001q\210"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x6777bf8
>        freevars = 0x6777c28
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ecc1e30
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112e3f4 "|"
>        names = ('not_empty', 'acquire', '_qsize', 'Empty', 'None', 'wait', 'ValueError', '_time', '_get', 'not_full', 'notify', 'release')
>        consts = ("Remove and return an item from the queue.\n\n        If optional args 'block' is true and 'timeout' is None (the default),\n        block if necessary until an item is available. If 'timeout' is\n        a positive number, it blocks at most 'timeout' seconds and raises\n        the Empty exception if no item was available within that time.\n        Otherwise ('block' is false), return an item if one is immediately\n        available, else raise the Empty exception ('timeout' is ignored\n        in that case).\n        ", 0, "'timeout' must be a positive number", <float at remote 0x11244d8>, None)
>#9  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=3, kws=0x7fdf84000ee8, kwcount=0, defs=0x7fdf9ecd0cc8, defcount=2, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x3ccf460
>        x = <optimized out>
>        u = <optimized out>
>#10 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=3, n=<optimized out>, pp_stack=0x7fdf8e1c4558, func=<function at remote 0x7fdf9ec638c0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#11 call_function (oparg=<optimized out>, pp_stack=0x7fdf8e1c4558) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec638c0>
>        w = <optimized out>
>        na = 3
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf84000ed0
>        x = <optimized out>
>#12 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf84000d20, for file /usr/lib64/calibre/calibre/utils/ipc/server.py, line 168, in run (self=<Server(_Thread__ident=140598138656512, address='/tmp/pymp-ztv30D/listener-2Vox4b', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f650>, acquire=<built-in method acquire of thread.lock object at remote 0x343f650>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f650>) at remote 0x396ec90>) at remote 0x39c5490>, id=1, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f9d0>, acquire=<built-in method acquire of thread.lock object at remote 0x343f9d0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f9d0>) at remote 0x396ec50>, workers=<collections.deque at remote 0x3bba750>, _Thread__initialized=True, _Thread__name='Thread-3', notify_on_job_done=<function at r...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf84000ee8
>        stack_pointer = <optimized out>
>        next_instr = 0x202b582 "}\001"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf84000e98
>        freevars = 0x7fdf84000ed0
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x1b65330
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x202b564 "x\302\002t"
>        names = ('True', 'add_jobs_queue', 'get', 'None', 'waiting_jobs', 'insert', 'Empty', 'workers', 'notifications', 'get_nowait', 'job', 'put', 'changed_jobs_queue', 'is_alive', 'close_log_file', 'remove', 'returncode', 'failed', 'os', 'path', 'exists', 'rfile', 'cPickle', 'load', 'open', 'result', 'time', 'start_time', 'duration', 'suitable_waiting_job', 'pop', 'kill_on_start', 'killed', 'launch_worker', 'start_job', 'append', 'log_path', 'kill_queue', '_kill_job')
>        consts = (None, <float at remote 0x1ff5a30>, 0, 'rb', <float at remote 0x1ff5a18>, 1)
>#13 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x7fdf84000c80, kwcount=0, defs=0x0, defcount=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x3ccf460
>        x = <optimized out>
>        u = <optimized out>
>#14 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf8e1c4808, func=<function at remote 0x20495f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#15 call_function (oparg=<optimized out>, pp_stack=0x7fdf8e1c4808) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x20495f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf84000c78
>        x = <optimized out>
>#16 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf84000c80
>        stack_pointer = <optimized out>
>        next_instr = 0x112beea "\001Wn\a\001\004t\016"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec564b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112be44 "z\322\001|"
>        names = ('_set_ident', '_Thread__started', 'set', '_active_limbo_lock', '_active', '_Thread__ident', '_limbo', '_note', '_trace_hook', '_sys', 'settrace', '_profile_hook', 'setprofile', 'run', 'SystemExit', 'stderr', 'write', 'name', '_format_exc', '_Thread__exc_info', '_Thread__stderr', 'tb_frame', 'f_code', 'co_filename', 'tb_lineno', 'co_name', 'tb_next', '_Thread__exc_clear', '_Thread__stop', '_get_ident')
>        consts = (None, '%s.__bootstrap(): thread started', '%s.__bootstrap(): registering trace hook', '%s.__bootstrap(): registering profile hook', '%s.__bootstrap(): raised SystemExit', '%s.__bootstrap(): unhandled exception', 'Exception in thread %s:\n%s\n', 'Exception in thread ', ' (most likely raised during interpreter shutdown):', 'Traceback (most recent call last):', '  File "%s", line %s, in %s', '%s: %s', '%s.__bootstrap(): normal return')
>#17 0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf8e1c4a08, func=<function at remote 0x7fdf9ec625f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x3ccf460
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#18 call_function (oparg=<optimized out>, pp_stack=0x7fdf8e1c4a08) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec625f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf84000a90
>        x = <optimized out>
>#19 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf84000910, for file /usr/lib64/python2.7/threading.py, line 524, in __bootstrap (self=<Server(_Thread__ident=140598138656512, address='/tmp/pymp-ztv30D/listener-2Vox4b', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f650>, acquire=<built-in method acquire of thread.lock object at remote 0x343f650>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f650>) at remote 0x396ec90>) at remote 0x39c5490>, id=1, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f9d0>, acquire=<built-in method acquire of thread.lock object at remote 0x343f9d0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f9d0>) at remote 0x396ec50>, workers=<collections.deque at remote 0x3bba750>, _Thread__initialized=True, _Thread__name='Thread-3', notify_on_job_done=<function at remote...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf84000a98
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecc7ba0 "\001Wn#"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf84000a88
>        freevars = 0x7fdf84000a90
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec563b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecc7b94 "y\016"
>        names = ('_Thread__bootstrap_inner', '_Thread__daemonic', '_sys', 'None')
>        consts = (None,)
>#20 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x34a7f68, argcount=1, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x3ccf460
>        x = <optimized out>
>        u = <optimized out>
>#21 0x0000003a0746d796 in function_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Server(_Thread__ident=140598138656512, address='/tmp/pymp-ztv30D/listener-2Vox4b', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f650>, acquire=<built-in method acquire of thread.lock object at remote 0x343f650>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f650>) at remote 0x396ec90>) at remote 0x39c5490>, id=1, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f9d0>, acquire=<built-in method acquire of thread.lock object at remote 0x343f9d0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f9d0>) at remote 0x396ec50>, workers=<collections.deque at remote 0x3bba750>, _Thread__initialized=True, _Thread__name='Thread-3', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bba6e0>...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/funcobject.c:526
>        result = <optimized out>
>        argdefs = <optimized out>
>        kwtuple = 0x0
>        d = 0x0
>        k = 0x0
>        nk = 0
>        nd = 0
>#22 0x0000003a07449a7e in PyObject_Call (func=func@entry=<function at remote 0x7fdf9ec62500>, arg=arg@entry=(<Server(_Thread__ident=140598138656512, address='/tmp/pymp-ztv30D/listener-2Vox4b', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f650>, acquire=<built-in method acquire of thread.lock object at remote 0x343f650>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f650>) at remote 0x396ec90>) at remote 0x39c5490>, id=1, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f9d0>, acquire=<built-in method acquire of thread.lock object at remote 0x343f9d0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f9d0>) at remote 0x396ec50>, workers=<collections.deque at remote 0x3bba750>, _Thread__initialized=True, _Thread__name='Thread-3', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bba6e0>...(truncated), kw=kw@entry=0x0) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a0746d6e0 <function_call>
>#23 0x0000003a07458070 in instancemethod_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Server(_Thread__ident=140598138656512, address='/tmp/pymp-ztv30D/listener-2Vox4b', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f650>, acquire=<built-in method acquire of thread.lock object at remote 0x343f650>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f650>) at remote 0x396ec90>) at remote 0x39c5490>, id=1, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f9d0>, acquire=<built-in method acquire of thread.lock object at remote 0x343f9d0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f9d0>) at remote 0x396ec50>, workers=<collections.deque at remote 0x3bba750>, _Thread__initialized=True, _Thread__name='Thread-3', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bba6e0>...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/classobject.c:2578
>        self = <Server(_Thread__ident=140598138656512, address='/tmp/pymp-ztv30D/listener-2Vox4b', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f650>, acquire=<built-in method acquire of thread.lock object at remote 0x343f650>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f650>) at remote 0x396ec90>) at remote 0x39c5490>, id=1, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f9d0>, acquire=<built-in method acquire of thread.lock object at remote 0x343f9d0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f9d0>) at remote 0x396ec50>, workers=<collections.deque at remote 0x3bba750>, _Thread__initialized=True, _Thread__name='Thread-3', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bba6e0>,...(truncated)
>        klass = <optimized out>
>        result = <optimized out>
>#24 0x0000003a07449a7e in PyObject_Call (func=func@entry=<instancemethod at remote 0x35a4e60>, arg=arg@entry=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a07457fd0 <instancemethod_call>
>#25 0x0000003a074d71c7 in PyEval_CallObjectWithKeywords (func=<instancemethod at remote 0x35a4e60>, arg=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3967
>        result = <optimized out>
>#26 0x0000003a0750b432 in t_bootstrap (boot_raw=0x3cc77e0) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:614
>        boot = 0x3cc77e0
>        tstate = 0x3ccf460
>        res = <optimized out>
>#27 0x00000039e4007d14 in start_thread (arg=0x7fdf8e1c5700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf8e1c5700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140598138656512, 4901417157404991259, 0, 248623792128, 140598138656512, 0, -4919539554454528229, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#28 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 10 (Thread 0x7fdf7dcf0700 (LWP 31892)):
>#0  0x00000039e34ea9e3 in select () at ../sysdeps/unix/syscall-template.S:82
>No locals.
>#1  0x00007fdfa0838fbd in floatsleep (secs=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:943
>        _save = 0x496f460
>        t = {tv_sec = 0, tv_usec = 32193}
>        frac = <optimized out>
>#2  time_sleep (self=<optimized out>, args=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:206
>        secs = 0.036199808120727539
>#3  0x0000003a074dd0e1 in call_function (oparg=<optimized out>, pp_stack=0x7fdf7dceeff8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4098
>        callargs = (<float at remote 0x7fdf84002528>,)
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in function sleep>
>        w = <optimized out>
>        na = <optimized out>
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7a35158
>        x = <optimized out>
>#4  PyEval_EvalFrameEx (f=f@entry=Frame 0x7a34fa0, for file /usr/lib64/python2.7/threading.py, line 262, in wait (self=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2def0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2def0>, _Condition__waiters=[<thread.lock at remote 0x269ccd0>], release=<built-in method release of thread.lock object at remote 0x3e2def0>) at remote 0x4236ed0>, timeout=<float at remote 0x8cd27e0>, waiter=<thread.lock at remote 0x269ccd0>, saved_state=None, endtime=<float at remote 0x7fdf6c054ee8>, delay=<float at remote 0x7fdf84002528>, gotit=False, remaining=<float at remote 0x7fdf84002528>), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7a35160
>        stack_pointer = <optimized out>
>        next_instr = 0x112e2fb "\001q\214"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7a35118
>        freevars = 0x7a35158
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9eccf430
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112e214 "|"
>        names = ('_is_owned', 'RuntimeError', '_allocate_lock', 'acquire', '_Condition__waiters', 'append', '_release_save', 'None', '_note', '_time', 'True', 'min', '_sleep', 'remove', 'ValueError', '_acquire_restore')
>        consts = (None, 'cannot wait on un-acquired lock', '%s.wait(): got it', <float at remote 0x11247f0>, 0, 2, <float at remote 0x1124820>, '%s.wait(%s): timed out', '%s.wait(%s): got it')
>#5  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=2, kws=0x557aa08, kwcount=0, defs=0x7fdf9ec5c968, defcount=1, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x496f460
>        x = <optimized out>
>        u = <optimized out>
>#6  0x0000003a074dc113 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0x7fdf7dcef2a8, func=<function at remote 0x7fdf9ec61848>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#7  call_function (oparg=<optimized out>, pp_stack=0x7fdf7dcef2a8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec61848>
>        w = <optimized out>
>        na = 2
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x557a9f8
>        x = <optimized out>
>#8  PyEval_EvalFrameEx (f=f@entry=Frame 0x557a850, for file /usr/lib64/python2.7/Queue.py, line 177, in get (self=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x35fb830>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2def0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2def0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2def0>) at remote 0x4236dd0>, mutex=<thread.lock at remote 0x3e2def0>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2def0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2def0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2def0>) at remote 0x4236e50>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2def0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2def0>, _Condition__waiters=[<thread.lock at rem...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x557aa08
>        stack_pointer = <optimized out>
>        next_instr = 0x112e4b9 "\001q\210"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x557a9c8
>        freevars = 0x557a9f8
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ecc1e30
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112e3f4 "|"
>        names = ('not_empty', 'acquire', '_qsize', 'Empty', 'None', 'wait', 'ValueError', '_time', '_get', 'not_full', 'notify', 'release')
>        consts = ("Remove and return an item from the queue.\n\n        If optional args 'block' is true and 'timeout' is None (the default),\n        block if necessary until an item is available. If 'timeout' is\n        a positive number, it blocks at most 'timeout' seconds and raises\n        the Empty exception if no item was available within that time.\n        Otherwise ('block' is false), return an item if one is immediately\n        available, else raise the Empty exception ('timeout' is ignored\n        in that case).\n        ", 0, "'timeout' must be a positive number", <float at remote 0x11244d8>, None)
>#9  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=3, kws=0x7fdf70000ee8, kwcount=0, defs=0x7fdf9ecd0cc8, defcount=2, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x496f460
>        x = <optimized out>
>        u = <optimized out>
>#10 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=3, n=<optimized out>, pp_stack=0x7fdf7dcef558, func=<function at remote 0x7fdf9ec638c0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#11 call_function (oparg=<optimized out>, pp_stack=0x7fdf7dcef558) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec638c0>
>        w = <optimized out>
>        na = 3
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf70000ed0
>        x = <optimized out>
>#12 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf70000d20, for file /usr/lib64/calibre/calibre/utils/ipc/server.py, line 168, in run (self=<Server(_Thread__ident=140597865154304, address='/tmp/pymp-ztv30D/listener-fsy7tz', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2db70>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2db70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2db70>) at remote 0x4238210>) at remote 0x4238310>, id=2, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2dbb0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2dbb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2dbb0>) at remote 0x4238110>, workers=<collections.deque at remote 0x497f980>, _Thread__initialized=True, _Thread__name='Thread-8', notify_on_job_done=<function at r...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf70000ee8
>        stack_pointer = <optimized out>
>        next_instr = 0x202b582 "}\001"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf70000e98
>        freevars = 0x7fdf70000ed0
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x1b65330
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x202b564 "x\302\002t"
>        names = ('True', 'add_jobs_queue', 'get', 'None', 'waiting_jobs', 'insert', 'Empty', 'workers', 'notifications', 'get_nowait', 'job', 'put', 'changed_jobs_queue', 'is_alive', 'close_log_file', 'remove', 'returncode', 'failed', 'os', 'path', 'exists', 'rfile', 'cPickle', 'load', 'open', 'result', 'time', 'start_time', 'duration', 'suitable_waiting_job', 'pop', 'kill_on_start', 'killed', 'launch_worker', 'start_job', 'append', 'log_path', 'kill_queue', '_kill_job')
>        consts = (None, <float at remote 0x1ff5a30>, 0, 'rb', <float at remote 0x1ff5a18>, 1)
>#13 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x7fdf70000c80, kwcount=0, defs=0x0, defcount=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x496f460
>        x = <optimized out>
>        u = <optimized out>
>#14 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf7dcef808, func=<function at remote 0x20495f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#15 call_function (oparg=<optimized out>, pp_stack=0x7fdf7dcef808) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x20495f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf70000c78
>        x = <optimized out>
>#16 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf70000c80
>        stack_pointer = <optimized out>
>        next_instr = 0x112beea "\001Wn\a\001\004t\016"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec564b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112be44 "z\322\001|"
>        names = ('_set_ident', '_Thread__started', 'set', '_active_limbo_lock', '_active', '_Thread__ident', '_limbo', '_note', '_trace_hook', '_sys', 'settrace', '_profile_hook', 'setprofile', 'run', 'SystemExit', 'stderr', 'write', 'name', '_format_exc', '_Thread__exc_info', '_Thread__stderr', 'tb_frame', 'f_code', 'co_filename', 'tb_lineno', 'co_name', 'tb_next', '_Thread__exc_clear', '_Thread__stop', '_get_ident')
>        consts = (None, '%s.__bootstrap(): thread started', '%s.__bootstrap(): registering trace hook', '%s.__bootstrap(): registering profile hook', '%s.__bootstrap(): raised SystemExit', '%s.__bootstrap(): unhandled exception', 'Exception in thread %s:\n%s\n', 'Exception in thread ', ' (most likely raised during interpreter shutdown):', 'Traceback (most recent call last):', '  File "%s", line %s, in %s', '%s: %s', '%s.__bootstrap(): normal return')
>#17 0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf7dcefa08, func=<function at remote 0x7fdf9ec625f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x496f460
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#18 call_function (oparg=<optimized out>, pp_stack=0x7fdf7dcefa08) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec625f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf70000a90
>        x = <optimized out>
>#19 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf70000910, for file /usr/lib64/python2.7/threading.py, line 524, in __bootstrap (self=<Server(_Thread__ident=140597865154304, address='/tmp/pymp-ztv30D/listener-fsy7tz', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2db70>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2db70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2db70>) at remote 0x4238210>) at remote 0x4238310>, id=2, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2dbb0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2dbb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2dbb0>) at remote 0x4238110>, workers=<collections.deque at remote 0x497f980>, _Thread__initialized=True, _Thread__name='Thread-8', notify_on_job_done=<function at remote...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf70000a98
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecc7ba0 "\001Wn#"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf70000a88
>        freevars = 0x7fdf70000a90
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec563b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecc7b94 "y\016"
>        names = ('_Thread__bootstrap_inner', '_Thread__daemonic', '_sys', 'None')
>        consts = (None,)
>#20 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x42385a8, argcount=1, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x496f460
>        x = <optimized out>
>        u = <optimized out>
>#21 0x0000003a0746d796 in function_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Server(_Thread__ident=140597865154304, address='/tmp/pymp-ztv30D/listener-fsy7tz', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2db70>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2db70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2db70>) at remote 0x4238210>) at remote 0x4238310>, id=2, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2dbb0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2dbb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2dbb0>) at remote 0x4238110>, workers=<collections.deque at remote 0x497f980>, _Thread__initialized=True, _Thread__name='Thread-8', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x497f910>...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/funcobject.c:526
>        result = <optimized out>
>        argdefs = <optimized out>
>        kwtuple = 0x0
>        d = 0x0
>        k = 0x0
>        nk = 0
>        nd = 0
>#22 0x0000003a07449a7e in PyObject_Call (func=func@entry=<function at remote 0x7fdf9ec62500>, arg=arg@entry=(<Server(_Thread__ident=140597865154304, address='/tmp/pymp-ztv30D/listener-fsy7tz', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2db70>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2db70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2db70>) at remote 0x4238210>) at remote 0x4238310>, id=2, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2dbb0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2dbb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2dbb0>) at remote 0x4238110>, workers=<collections.deque at remote 0x497f980>, _Thread__initialized=True, _Thread__name='Thread-8', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x497f910>...(truncated), kw=kw@entry=0x0) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a0746d6e0 <function_call>
>#23 0x0000003a07458070 in instancemethod_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Server(_Thread__ident=140597865154304, address='/tmp/pymp-ztv30D/listener-fsy7tz', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2db70>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2db70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2db70>) at remote 0x4238210>) at remote 0x4238310>, id=2, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2dbb0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2dbb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2dbb0>) at remote 0x4238110>, workers=<collections.deque at remote 0x497f980>, _Thread__initialized=True, _Thread__name='Thread-8', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x497f910>...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/classobject.c:2578
>        self = <Server(_Thread__ident=140597865154304, address='/tmp/pymp-ztv30D/listener-fsy7tz', _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2db70>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2db70>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2db70>) at remote 0x4238210>) at remote 0x4238310>, id=2, _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2dbb0>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2dbb0>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2dbb0>) at remote 0x4238110>, workers=<collections.deque at remote 0x497f980>, _Thread__initialized=True, _Thread__name='Thread-8', notify_on_job_done=<function at remote 0x2049320>, kill_queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x497f910>,...(truncated)
>        klass = <optimized out>
>        result = <optimized out>
>#24 0x0000003a07449a7e in PyObject_Call (func=func@entry=<instancemethod at remote 0x7fdf88218f00>, arg=arg@entry=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a07457fd0 <instancemethod_call>
>#25 0x0000003a074d71c7 in PyEval_CallObjectWithKeywords (func=<instancemethod at remote 0x7fdf88218f00>, arg=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3967
>        result = <optimized out>
>#26 0x0000003a0750b432 in t_bootstrap (boot_raw=0x3a790e0) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:614
>        boot = 0x3a790e0
>        tstate = 0x496f460
>        res = <optimized out>
>#27 0x00000039e4007d14 in start_thread (arg=0x7fdf7dcf0700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf7dcf0700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140597865154304, 4901417157404991259, 0, 248623792128, 140597865154304, 0, -4919145261961240805, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#28 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 9 (Thread 0x7fdf8ee2e700 (LWP 31845)):
>#0  0x00000039e400e32d in accept () at ../sysdeps/unix/syscall-template.S:82
>No locals.
>#1  0x00007fdf9e5fa0e2 in sock_accept (s=0x266ff00) at /usr/src/debug/Python-2.7.3/Modules/socketmodule.c:1662
>        _save = 0x33e2bb0
>        addrbuf = {in = {sin_family = 0, sin_port = 0, sin_addr = {s_addr = 0}, sin_zero = "\000\000\000\000\000\000\000"}, un = {sun_family = 0, sun_path = '\000' <repeats 107 times>}, nl = {nl_family = 0, nl_pad = 0, nl_pid = 0, nl_groups = 0}, in6 = {sin6_family = 0, sin6_port = 0, sin6_flowinfo = 0, sin6_addr = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, sin6_scope_id = 0}, storage = {ss_family = 0, __ss_align = 0, __ss_padding = '\000' <repeats 96 times>, "p\276\357\000\000\000\000\000\275\210\002\200g\251\035\353"}, ll = {sll_family = 0, sll_protocol = 0, sll_ifindex = 0, sll_hatype = 0, sll_pkttype = 0 '\000', sll_halen = 0 '\000', sll_addr = "\000\000\000\000\000\000\000"}}
>        newfd = -1
>        addrlen = <optimized out>
>        sock = 0x0
>        addr = 0x0
>        res = 0x0
>        timeout = <optimized out>
>#2  0x0000003a074dce36 in call_function (oparg=<optimized out>, pp_stack=0x7fdf8ee2cf58) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4082
>        meth = <optimized out>
>        self = <optimized out>
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in method accept of _socket.socket object at remote 0x266ff00>
>        w = <optimized out>
>        na = 0
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf80001440
>        x = <optimized out>
>#3  PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf80001448
>        stack_pointer = 0x7fdf80001448
>        next_instr = 0x7fdf9ec6cba0 "\\\002"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec776b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ec6cb94 "|"
>        names = ('_sock', 'accept', '_socketobject')
>        consts = (None, '_sock')
>#4  0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf8ee2d158, func=<function at remote 0x7fdf9ec6bb18>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x33e2bb0
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#5  call_function (oparg=<optimized out>, pp_stack=0x7fdf8ee2d158) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec6bb18>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf80001268
>        x = <optimized out>
>#6  PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf80001270
>        stack_pointer = <optimized out>
>        next_instr = 0x1ecfd80 "\\\002"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x1fce3b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x1ecfd74 "|"
>        names = ('_socket', 'accept', '_last_accepted', 'duplicate', 'fileno', '_multiprocessing', 'Connection', 'close')
>        consts = (None,)
>#7  0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf8ee2d358, func=<function at remote 0x2045050>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x33e2bb0
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#8  call_function (oparg=<optimized out>, pp_stack=0x7fdf8ee2d358) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x2045050>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf80001088
>        x = <optimized out>
>#9  PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf80001090
>        stack_pointer = <optimized out>
>        next_instr = 0x1b4ce30 "}\001"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x1fc3630
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x1b4ce24 "|"
>        names = ('_listener', 'accept', '_authkey', 'deliver_challenge', 'answer_challenge')
>        consts = ('\n        Accept a connection on the bound socket or named pipe of `self`.\n\n        Returns a `Connection` object.\n        ',)
>#10 0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf8ee2d558, func=<function at remote 0x203cc80>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x33e2bb0
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#11 call_function (oparg=<optimized out>, pp_stack=0x7fdf8ee2d558) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x203cc80>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf80000eb0
>        x = <optimized out>
>#12 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf80000d20, for file /usr/lib64/calibre/calibre/gui2/ui.py, line 62, in run (self=<Listener(queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3487520>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494250>, mutex=<thread.lock at remote 0x343f390>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494210>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf80000eb8
>        stack_pointer = <optimized out>
>        next_instr = 0x14ebb22 "}\001"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf80000e98
>        freevars = 0x7fdf80000eb0
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ecb07b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x14ebaf4 "|"
>        names = ('listener', 'None', '_run', 'accept', 'recv', 'queue', 'put')
>        consts = (None,)
>#13 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x7fdf80000c80, kwcount=0, defs=0x0, defcount=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x33e2bb0
>        x = <optimized out>
>        u = <optimized out>
>#14 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf8ee2d808, func=<function at remote 0x2632e60>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#15 call_function (oparg=<optimized out>, pp_stack=0x7fdf8ee2d808) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x2632e60>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf80000c78
>        x = <optimized out>
>#16 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf80000c80
>        stack_pointer = <optimized out>
>        next_instr = 0x112beea "\001Wn\a\001\004t\016"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec564b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112be44 "z\322\001|"
>        names = ('_set_ident', '_Thread__started', 'set', '_active_limbo_lock', '_active', '_Thread__ident', '_limbo', '_note', '_trace_hook', '_sys', 'settrace', '_profile_hook', 'setprofile', 'run', 'SystemExit', 'stderr', 'write', 'name', '_format_exc', '_Thread__exc_info', '_Thread__stderr', 'tb_frame', 'f_code', 'co_filename', 'tb_lineno', 'co_name', 'tb_next', '_Thread__exc_clear', '_Thread__stop', '_get_ident')
>        consts = (None, '%s.__bootstrap(): thread started', '%s.__bootstrap(): registering trace hook', '%s.__bootstrap(): registering profile hook', '%s.__bootstrap(): raised SystemExit', '%s.__bootstrap(): unhandled exception', 'Exception in thread %s:\n%s\n', 'Exception in thread ', ' (most likely raised during interpreter shutdown):', 'Traceback (most recent call last):', '  File "%s", line %s, in %s', '%s: %s', '%s.__bootstrap(): normal return')
>#17 0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf8ee2da08, func=<function at remote 0x7fdf9ec625f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x33e2bb0
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#18 call_function (oparg=<optimized out>, pp_stack=0x7fdf8ee2da08) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec625f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf80000a90
>        x = <optimized out>
>#19 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf80000910, for file /usr/lib64/python2.7/threading.py, line 524, in __bootstrap (self=<Listener(queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3487520>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494250>, mutex=<thread.lock at remote 0x343f390>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494210>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condit...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf80000a98
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecc7ba0 "\001Wn#"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf80000a88
>        freevars = 0x7fdf80000a90
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec563b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecc7b94 "y\016"
>        names = ('_Thread__bootstrap_inner', '_Thread__daemonic', '_sys', 'None')
>        consts = (None,)
>#20 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x1559168, argcount=1, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x33e2bb0
>        x = <optimized out>
>        u = <optimized out>
>#21 0x0000003a0746d796 in function_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Listener(queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3487520>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494250>, mutex=<thread.lock at remote 0x343f390>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494210>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/funcobject.c:526
>        result = <optimized out>
>        argdefs = <optimized out>
>        kwtuple = 0x0
>        d = 0x0
>        k = 0x0
>        nk = 0
>        nd = 0
>#22 0x0000003a07449a7e in PyObject_Call (func=func@entry=<function at remote 0x7fdf9ec62500>, arg=arg@entry=(<Listener(queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3487520>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494250>, mutex=<thread.lock at remote 0x343f390>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494210>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at...(truncated), kw=kw@entry=0x0) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a0746d6e0 <function_call>
>#23 0x0000003a07458070 in instancemethod_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Listener(queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3487520>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494250>, mutex=<thread.lock at remote 0x343f390>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494210>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/classobject.c:2578
>        self = <Listener(queue=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3487520>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494250>, mutex=<thread.lock at remote 0x343f390>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at remote 0x3494210>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x343f390>, acquire=<built-in method acquire of thread.lock object at remote 0x343f390>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x343f390>) at ...(truncated)
>        klass = <optimized out>
>        result = <optimized out>
>#24 0x0000003a07449a7e in PyObject_Call (func=func@entry=<instancemethod at remote 0x2ae0410>, arg=arg@entry=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a07457fd0 <instancemethod_call>
>#25 0x0000003a074d71c7 in PyEval_CallObjectWithKeywords (func=<instancemethod at remote 0x2ae0410>, arg=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3967
>        result = <optimized out>
>#26 0x0000003a0750b432 in t_bootstrap (boot_raw=0x3125820) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:614
>        boot = 0x3125820
>        tstate = 0x33e2bb0
>        res = <optimized out>
>#27 0x00000039e4007d14 in start_thread (arg=0x7fdf8ee2e700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf8ee2e700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140598151669504, 4901417157404991259, 0, 248623792128, 140598151669504, 0, -4919539197435371749, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#28 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 8 (Thread 0x7fdf8fbe9700 (LWP 32325)):
>#0  futex_wait (val=840, addr=0x4f10b84) at ../../../libgomp/config/linux/x86/futex.h:44
>        r10 = 0
>        res = -512
>#1  do_wait (val=840, addr=0x4f10b84) at ../../../libgomp/config/linux/wait.h:64
>No locals.
>#2  do_wait (val=840, addr=0x4f10b84) at ../../../libgomp/config/linux/bar.c:34
>No locals.
>#3  gomp_barrier_wait_end (bar=0x4f10b80, state=840) at ../../../libgomp/config/linux/bar.c:47
>No locals.
>#4  0x0000003a0d2087ee in gomp_thread_start (xdata=<optimized out>) at ../../../libgomp/team.c:120
>        team = 0x3ffbb10
>        data = <optimized out>
>        pool = 0x4f10b40
>        local_fn = 0x39f296b5e0 <VerticalFilter._omp_fn.1>
>        local_data = 0x7fff093480b0
>#5  0x00000039e4007d14 in start_thread (arg=0x7fdf8fbe9700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf8fbe9700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140598166066944, 4901417157404991259, 0, 41792320, 140598166066944, 22, -4919536550124904677, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#6  0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 7 (Thread 0x7fdf7ed54700 (LWP 32162)):
>#0  sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:86
>No locals.
>#1  0x0000003a07507575 in PyThread_acquire_lock (lock=0x7fdf6c048070, waitflag=1) at /usr/src/debug/Python-2.7.3/Python/thread_pthread.h:321
>        success = <optimized out>
>        thelock = 0x7fdf6c048070
>        status = <optimized out>
>        error = 0
>#2  0x0000003a0750b084 in lock_PyThread_acquire_lock (self=0x7fdf88de1090, args=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:52
>        _save = 0x41f9890
>        i = 1
>#3  0x0000003a074dd0e1 in call_function (oparg=<optimized out>, pp_stack=0x7fdf7ed52ff8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4098
>        callargs = ()
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in method acquire of thread.lock object at remote 0x7fdf88de1090>
>        w = <optimized out>
>        na = <optimized out>
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x6941e38
>        x = <optimized out>
>#4  PyEval_EvalFrameEx (f=f@entry=Frame 0x6941c80, for file /usr/lib64/python2.7/threading.py, line 243, in wait (self=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247f30>, acquire=<built-in method acquire of thread.lock object at remote 0x4247f30>, _Condition__waiters=[<thread.lock at remote 0x7fdf88de1090>], release=<built-in method release of thread.lock object at remote 0x4247f30>) at remote 0x4976890>, timeout=None, waiter=<thread.lock at remote 0x7fdf88de1090>, saved_state=None), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x6941e40
>        stack_pointer = <optimized out>
>        next_instr = 0x112e276 "\001|"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x6941df8
>        freevars = 0x6941e38
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9eccf430
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112e214 "|"
>        names = ('_is_owned', 'RuntimeError', '_allocate_lock', 'acquire', '_Condition__waiters', 'append', '_release_save', 'None', '_note', '_time', 'True', 'min', '_sleep', 'remove', 'ValueError', '_acquire_restore')
>        consts = (None, 'cannot wait on un-acquired lock', '%s.wait(): got it', <float at remote 0x11247f0>, 0, 2, <float at remote 0x1124820>, '%s.wait(%s): timed out', '%s.wait(%s): got it')
>#5  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=2, kws=0x458a978, kwcount=0, defs=0x7fdf9ec5c968, defcount=1, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x41f9890
>        x = <optimized out>
>        u = <optimized out>
>#6  0x0000003a074dc113 in fast_function (nk=<optimized out>, na=2, n=<optimized out>, pp_stack=0x7fdf7ed532a8, func=<function at remote 0x7fdf9ec61848>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#7  call_function (oparg=<optimized out>, pp_stack=0x7fdf7ed532a8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec61848>
>        w = <optimized out>
>        na = 2
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x458a968
>        x = <optimized out>
>#8  PyEval_EvalFrameEx (f=f@entry=Frame 0x458a7e0, for file /usr/lib64/python2.7/threading.py, line 403, in wait (self=<_Event(_Verbose__verbose=False, _Event__flag=False, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247f30>, acquire=<built-in method acquire of thread.lock object at remote 0x4247f30>, _Condition__waiters=[<thread.lock at remote 0x7fdf88de1090>], release=<built-in method release of thread.lock object at remote 0x4247f30>) at remote 0x4976890>) at remote 0x4976850>, timeout=None), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x458a978
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecb6e7c "\001n"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x458a958
>        freevars = 0x458a968
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9eccfe30
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecb6e54 "|"
>        names = ('_Event__cond', 'acquire', '_Event__flag', 'wait', 'release')
>        consts = (None,)
>#9  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x7fdf6c001900, kwcount=0, defs=0x7fdf9ec5cb28, defcount=1, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x41f9890
>        x = <optimized out>
>        u = <optimized out>
>#10 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf7ed53558, func=<function at remote 0x7fdf9ec620c8>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#11 call_function (oparg=<optimized out>, pp_stack=0x7fdf7ed53558) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec620c8>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf6c0018f8
>        x = <optimized out>
>#12 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf6c001770, for file /usr/lib64/calibre/calibre/gui2/auto_add.py, line 35, in run (self=<Worker(_Thread__ident=140597882341120, staging=set([]), _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247e10>, acquire=<built-in method acquire of thread.lock object at remote 0x4247e10>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247e10>) at remote 0x4976690>, _Thread__name='Thread-7', _Thread__daemonic=True, allowed=frozenset(['cbc', 'rtf', 'prc', 'azw1', 'text', 'htm', 'odt', 'cbr', 'pml', 'markdown', 'rar', 'cbz', 'azw4', 'htmlz', 'txt', 'djvu', 'ps', 'zip', 'djv', 'oebzip', 'chm', 'updb', 'textile', 'imp', 'html', 'xhtm', 'txtz', 'xps', 'xhtml', 'fb2', 'docx', 'lit', 'snb', 'rb', 'lrf', 'azw3', 'tpz', 'lrx', 'epub', 'md', 'mobi', 'ibook', 'doc', 'zbf', 'pmlz', 'pobi', 'book', 'iba', 'pdf', 'oxps', 'pdb', 'azw']), _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verb...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf6c001900
>        stack_pointer = <optimized out>
>        next_instr = 0x25aa9db "\001|"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf6c0018e8
>        freevars = 0x7fdf6c0018f8
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x26181b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x25aa9b4 "t"
>        names = ('PersistentTemporaryDirectory', 'tdir', 'keep_running', 'wake_up', 'wait', 'clear', 'auto_add', 'traceback', 'print_exc')
>        consts = (None, u'_auto_adder', 0)
>#13 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x7fdf88000c80, kwcount=0, defs=0x0, defcount=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x41f9890
>        x = <optimized out>
>        u = <optimized out>
>#14 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf7ed53808, func=<function at remote 0x2623de8>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#15 call_function (oparg=<optimized out>, pp_stack=0x7fdf7ed53808) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x2623de8>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf88000c78
>        x = <optimized out>
>#16 PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf88000c80
>        stack_pointer = <optimized out>
>        next_instr = 0x112beea "\001Wn\a\001\004t\016"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec564b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112be44 "z\322\001|"
>        names = ('_set_ident', '_Thread__started', 'set', '_active_limbo_lock', '_active', '_Thread__ident', '_limbo', '_note', '_trace_hook', '_sys', 'settrace', '_profile_hook', 'setprofile', 'run', 'SystemExit', 'stderr', 'write', 'name', '_format_exc', '_Thread__exc_info', '_Thread__stderr', 'tb_frame', 'f_code', 'co_filename', 'tb_lineno', 'co_name', 'tb_next', '_Thread__exc_clear', '_Thread__stop', '_get_ident')
>        consts = (None, '%s.__bootstrap(): thread started', '%s.__bootstrap(): registering trace hook', '%s.__bootstrap(): registering profile hook', '%s.__bootstrap(): raised SystemExit', '%s.__bootstrap(): unhandled exception', 'Exception in thread %s:\n%s\n', 'Exception in thread ', ' (most likely raised during interpreter shutdown):', 'Traceback (most recent call last):', '  File "%s", line %s, in %s', '%s: %s', '%s.__bootstrap(): normal return')
>#17 0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf7ed53a08, func=<function at remote 0x7fdf9ec625f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x41f9890
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#18 call_function (oparg=<optimized out>, pp_stack=0x7fdf7ed53a08) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec625f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf88000a90
>        x = <optimized out>
>#19 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf88000910, for file /usr/lib64/python2.7/threading.py, line 524, in __bootstrap (self=<Worker(_Thread__ident=140597882341120, staging=set([]), _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247e10>, acquire=<built-in method acquire of thread.lock object at remote 0x4247e10>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247e10>) at remote 0x4976690>, _Thread__name='Thread-7', _Thread__daemonic=True, allowed=frozenset(['cbc', 'rtf', 'prc', 'azw1', 'text', 'htm', 'odt', 'cbr', 'pml', 'markdown', 'rar', 'cbz', 'azw4', 'htmlz', 'txt', 'djvu', 'ps', 'zip', 'djv', 'oebzip', 'chm', 'updb', 'textile', 'imp', 'html', 'xhtm', 'txtz', 'xps', 'xhtml', 'fb2', 'docx', 'lit', 'snb', 'rb', 'lrf', 'azw3', 'tpz', 'lrx', 'epub', 'md', 'mobi', 'ibook', 'doc', 'zbf', 'pmlz', 'pobi', 'book', 'iba', 'pdf', 'oxps', 'pdb', 'azw']), _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbo...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf88000a98
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecc7ba0 "\001Wn#"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf88000a88
>        freevars = 0x7fdf88000a90
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec563b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecc7b94 "y\016"
>        names = ('_Thread__bootstrap_inner', '_Thread__daemonic', '_sys', 'None')
>        consts = (None,)
>#20 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x4236928, argcount=1, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x41f9890
>        x = <optimized out>
>        u = <optimized out>
>#21 0x0000003a0746d796 in function_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Worker(_Thread__ident=140597882341120, staging=set([]), _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247e10>, acquire=<built-in method acquire of thread.lock object at remote 0x4247e10>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247e10>) at remote 0x4976690>, _Thread__name='Thread-7', _Thread__daemonic=True, allowed=frozenset(['cbc', 'rtf', 'prc', 'azw1', 'text', 'htm', 'odt', 'cbr', 'pml', 'markdown', 'rar', 'cbz', 'azw4', 'htmlz', 'txt', 'djvu', 'ps', 'zip', 'djv', 'oebzip', 'chm', 'updb', 'textile', 'imp', 'html', 'xhtm', 'txtz', 'xps', 'xhtml', 'fb2', 'docx', 'lit', 'snb', 'rb', 'lrf', 'azw3', 'tpz', 'lrx', 'epub', 'md', 'mobi', 'ibook', 'doc', 'zbf', 'pmlz', 'pobi', 'book', 'iba', 'pdf', 'oxps', 'pdb', 'azw']), _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247d50>, acquire=<built-in method ...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/funcobject.c:526
>        result = <optimized out>
>        argdefs = <optimized out>
>        kwtuple = 0x0
>        d = 0x0
>        k = 0x0
>        nk = 0
>        nd = 0
>#22 0x0000003a07449a7e in PyObject_Call (func=func@entry=<function at remote 0x7fdf9ec62500>, arg=arg@entry=(<Worker(_Thread__ident=140597882341120, staging=set([]), _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247e10>, acquire=<built-in method acquire of thread.lock object at remote 0x4247e10>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247e10>) at remote 0x4976690>, _Thread__name='Thread-7', _Thread__daemonic=True, allowed=frozenset(['cbc', 'rtf', 'prc', 'azw1', 'text', 'htm', 'odt', 'cbr', 'pml', 'markdown', 'rar', 'cbz', 'azw4', 'htmlz', 'txt', 'djvu', 'ps', 'zip', 'djv', 'oebzip', 'chm', 'updb', 'textile', 'imp', 'html', 'xhtm', 'txtz', 'xps', 'xhtml', 'fb2', 'docx', 'lit', 'snb', 'rb', 'lrf', 'azw3', 'tpz', 'lrx', 'epub', 'md', 'mobi', 'ibook', 'doc', 'zbf', 'pmlz', 'pobi', 'book', 'iba', 'pdf', 'oxps', 'pdb', 'azw']), _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247d50>, acquire=<built-in method ...(truncated), kw=kw@entry=0x0) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a0746d6e0 <function_call>
>#23 0x0000003a07458070 in instancemethod_call (func=<function at remote 0x7fdf9ec62500>, arg=(<Worker(_Thread__ident=140597882341120, staging=set([]), _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247e10>, acquire=<built-in method acquire of thread.lock object at remote 0x4247e10>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247e10>) at remote 0x4976690>, _Thread__name='Thread-7', _Thread__daemonic=True, allowed=frozenset(['cbc', 'rtf', 'prc', 'azw1', 'text', 'htm', 'odt', 'cbr', 'pml', 'markdown', 'rar', 'cbz', 'azw4', 'htmlz', 'txt', 'djvu', 'ps', 'zip', 'djv', 'oebzip', 'chm', 'updb', 'textile', 'imp', 'html', 'xhtm', 'txtz', 'xps', 'xhtml', 'fb2', 'docx', 'lit', 'snb', 'rb', 'lrf', 'azw3', 'tpz', 'lrx', 'epub', 'md', 'mobi', 'ibook', 'doc', 'zbf', 'pmlz', 'pobi', 'book', 'iba', 'pdf', 'oxps', 'pdb', 'azw']), _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247d50>, acquire=<built-in method ...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/classobject.c:2578
>        self = <Worker(_Thread__ident=140597882341120, staging=set([]), _Thread__block=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247e10>, acquire=<built-in method acquire of thread.lock object at remote 0x4247e10>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x4247e10>) at remote 0x4976690>, _Thread__name='Thread-7', _Thread__daemonic=True, allowed=frozenset(['cbc', 'rtf', 'prc', 'azw1', 'text', 'htm', 'odt', 'cbr', 'pml', 'markdown', 'rar', 'cbz', 'azw4', 'htmlz', 'txt', 'djvu', 'ps', 'zip', 'djv', 'oebzip', 'chm', 'updb', 'textile', 'imp', 'html', 'xhtm', 'txtz', 'xps', 'xhtml', 'fb2', 'docx', 'lit', 'snb', 'rb', 'lrf', 'azw3', 'tpz', 'lrx', 'epub', 'md', 'mobi', 'ibook', 'doc', 'zbf', 'pmlz', 'pobi', 'book', 'iba', 'pdf', 'oxps', 'pdb', 'azw']), _Thread__started=<_Event(_Verbose__verbose=False, _Event__flag=True, _Event__cond=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x4247d50>, acquire=<built-in method a...(truncated)
>        klass = <optimized out>
>        result = <optimized out>
>#24 0x0000003a07449a7e in PyObject_Call (func=func@entry=<instancemethod at remote 0x2687460>, arg=arg@entry=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a07457fd0 <instancemethod_call>
>#25 0x0000003a074d71c7 in PyEval_CallObjectWithKeywords (func=<instancemethod at remote 0x2687460>, arg=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3967
>        result = <optimized out>
>#26 0x0000003a0750b432 in t_bootstrap (boot_raw=0x2885c00) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:614
>        boot = 0x2885c00
>        tstate = 0x41f9890
>        res = <optimized out>
>#27 0x00000039e4007d14 in start_thread (arg=0x7fdf7ed54700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf7ed54700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140597882341120, 4901417157404991259, 0, 51400208, 140597882341120, 22, -4919152050157052133, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#28 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 6 (Thread 0x7fdf29af3700 (LWP 32055)):
>#0  0x00000039e34ea9e3 in select () at ../sysdeps/unix/syscall-template.S:82
>No locals.
>#1  0x00007fdfa0838fbd in floatsleep (secs=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:943
>        _save = 0x5073ef0
>        t = {tv_sec = 1, tv_usec = 235878}
>        frac = <optimized out>
>#2  time_sleep (self=<optimized out>, args=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:206
>        secs = 2
>#3  0x0000003a074dd0e1 in call_function (oparg=<optimized out>, pp_stack=0x7fdf29af2558) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4098
>        callargs = (2,)
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in function sleep>
>        w = <optimized out>
>        na = <optimized out>
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf10000ad8
>        x = <optimized out>
>#4  PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf10000930, for file /usr/lib64/calibre/calibre/library/caches.py, line 53, in run (self=<MetadataBackup(clear_dirtied=<FunctionDispatcher(q=<Queue(unfinished_tasks=2471, queue=<collections.deque at remote 0x499b670>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a8450>, mutex=<thread.lock at remote 0x49a6050>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a84d0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread....(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf10000ae0
>        stack_pointer = <optimized out>
>        next_instr = 0x19bb0ef "\001|"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf10000aa8
>        freevars = 0x7fdf10000ad8
>        retval = 3
>        tstate = <optimized out>
>        co = 0x191c6b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x19bb0d4 "x\363\001|"
>        names = ('keep_running', 'time', 'sleep', 'db', 'get_a_dirtied_book', 'None', 'get_metadata_for_dump', 'prints', 'traceback', 'print_exc', 'clear_dirtied', 'metadata_to_opf', 'do_write', 'break_cycles')
>        consts = (None, 2, 'Failed to get backup metadata for id:', 'once', 'again, giving up', <float at remote 0x1088470>, 'Failed to convert to opf for id:', 'Failed to write backup metadata for id:')
>#5  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x502e760, kwcount=0, defs=0x0, defcount=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x5073ef0
>        x = <optimized out>
>        u = <optimized out>
>#6  0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf29af2808, func=<function at remote 0x1a62848>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#7  call_function (oparg=<optimized out>, pp_stack=0x7fdf29af2808) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x1a62848>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x502e758
>        x = <optimized out>
>#8  PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x502e760
>        stack_pointer = <optimized out>
>        next_instr = 0x112beea "\001Wn\a\001\004t\016"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec564b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112be44 "z\322\001|"
>        names = ('_set_ident', '_Thread__started', 'set', '_active_limbo_lock', '_active', '_Thread__ident', '_limbo', '_note', '_trace_hook', '_sys', 'settrace', '_profile_hook', 'setprofile', 'run', 'SystemExit', 'stderr', 'write', 'name', '_format_exc', '_Thread__exc_info', '_Thread__stderr', 'tb_frame', 'f_code', 'co_filename', 'tb_lineno', 'co_name', 'tb_next', '_Thread__exc_clear', '_Thread__stop', '_get_ident')
>        consts = (None, '%s.__bootstrap(): thread started', '%s.__bootstrap(): registering trace hook', '%s.__bootstrap(): registering profile hook', '%s.__bootstrap(): raised SystemExit', '%s.__bootstrap(): unhandled exception', 'Exception in thread %s:\n%s\n', 'Exception in thread ', ' (most likely raised during interpreter shutdown):', 'Traceback (most recent call last):', '  File "%s", line %s, in %s', '%s: %s', '%s.__bootstrap(): normal return')
>#9  0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf29af2a08, func=<function at remote 0x7fdf9ec625f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x5073ef0
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#10 call_function (oparg=<optimized out>, pp_stack=0x7fdf29af2a08) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec625f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x5860a80
>        x = <optimized out>
>#11 PyEval_EvalFrameEx (f=f@entry=Frame 0x5860900, for file /usr/lib64/python2.7/threading.py, line 524, in __bootstrap (self=<MetadataBackup(clear_dirtied=<FunctionDispatcher(q=<Queue(unfinished_tasks=2471, queue=<collections.deque at remote 0x499b670>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a8450>, mutex=<thread.lock at remote 0x49a6050>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a84d0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock ob...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x5860a88
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecc7ba0 "\001Wn#"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x5860a78
>        freevars = 0x5860a80
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec563b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecc7b94 "y\016"
>        names = ('_Thread__bootstrap_inner', '_Thread__daemonic', '_sys', 'None')
>        consts = (None,)
>#12 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x41a8b68, argcount=1, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x5073ef0
>        x = <optimized out>
>        u = <optimized out>
>#13 0x0000003a0746d796 in function_call (func=<function at remote 0x7fdf9ec62500>, arg=(<MetadataBackup(clear_dirtied=<FunctionDispatcher(q=<Queue(unfinished_tasks=2471, queue=<collections.deque at remote 0x499b670>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a8450>, mutex=<thread.lock at remote 0x49a6050>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a84d0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thre...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/funcobject.c:526
>        result = <optimized out>
>        argdefs = <optimized out>
>        kwtuple = 0x0
>        d = 0x0
>        k = 0x0
>        nk = 0
>        nd = 0
>#14 0x0000003a07449a7e in PyObject_Call (func=func@entry=<function at remote 0x7fdf9ec62500>, arg=arg@entry=(<MetadataBackup(clear_dirtied=<FunctionDispatcher(q=<Queue(unfinished_tasks=2471, queue=<collections.deque at remote 0x499b670>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a8450>, mutex=<thread.lock at remote 0x49a6050>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a84d0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thre...(truncated), kw=kw@entry=0x0) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a0746d6e0 <function_call>
>#15 0x0000003a07458070 in instancemethod_call (func=<function at remote 0x7fdf9ec62500>, arg=(<MetadataBackup(clear_dirtied=<FunctionDispatcher(q=<Queue(unfinished_tasks=2471, queue=<collections.deque at remote 0x499b670>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a8450>, mutex=<thread.lock at remote 0x49a6050>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a84d0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thre...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/classobject.c:2578
>        self = <MetadataBackup(clear_dirtied=<FunctionDispatcher(q=<Queue(unfinished_tasks=2471, queue=<collections.deque at remote 0x499b670>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a8450>, mutex=<thread.lock at remote 0x49a6050>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x49a6050>) at remote 0x41a84d0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x49a6050>, acquire=<built-in method acquire of thread.lock object at remote 0x49a6050>, _Condition__waiters=[], release=<built-in method release of threa...(truncated)
>        klass = <optimized out>
>        result = <optimized out>
>#16 0x0000003a07449a7e in PyObject_Call (func=func@entry=<instancemethod at remote 0x3bc5eb0>, arg=arg@entry=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a07457fd0 <instancemethod_call>
>#17 0x0000003a074d71c7 in PyEval_CallObjectWithKeywords (func=<instancemethod at remote 0x3bc5eb0>, arg=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3967
>        result = <optimized out>
>#18 0x0000003a0750b432 in t_bootstrap (boot_raw=0x52ee0c0) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:614
>        boot = 0x52ee0c0
>        tstate = 0x5073ef0
>        res = <optimized out>
>#19 0x00000039e4007d14 in start_thread (arg=0x7fdf29af3700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf29af3700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140596453783296, 4901417157404991259, 0, 248623792128, 140596453783296, 0, -4919329707721154789, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#20 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 5 (Thread 0x7fdf2b5fa700 (LWP 31927)):
>#0  0x00000039e34ea9e3 in select () at ../sysdeps/unix/syscall-template.S:82
>No locals.
>#1  0x0000003aedb55162 in QProcessManager::run (this=0x3aedecc3a0) at io/qprocess_unix.cpp:245
>        readset = {fds_bits = {16, 0 <repeats 15 times>}}
>        nselect = <optimized out>
>        c = 0 '\000'
>#2  0x0000003aeda7b5eb in QThreadPrivate::start (arg=0x3aedecc3a0) at thread/qthread_unix.cpp:307
>        __clframe = {__cancel_routine = 0x3aeda7a5d0 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x3aedecc3a0, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x3aedecc3a0
>        data = 0x24be350
>#3  0x00000039e4007d14 in start_thread (arg=0x7fdf2b5fa700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf2b5fa700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140596482123520, 4901417157404991259, 0, 248623792128, 140596482123520, 84901456, -4919335622427992293, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#4  0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 4 (Thread 0x7fdf7cc6c700 (LWP 31894)):
>#0  0x00000039e34e8bcf in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
>        resultvar = <optimized out>
>        oldtype = 0
>        result = <optimized out>
>#1  0x00000039e7c47af4 in g_main_context_poll (n_fds=2, fds=0x7fdf240029c0, timeout=-1, context=0x7fdf240009c0, priority=<optimized out>) at gmain.c:3440
>        poll_func = 0x39e7c55910 <g_poll>
>#2  g_main_context_iterate (context=context@entry=0x7fdf240009c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3141
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 2
>        allocated_nfds = <optimized out>
>        fds = 0x7fdf240029c0
>#3  0x00000039e7c47c14 in g_main_context_iteration (context=0x7fdf240009c0, may_block=1) at gmain.c:3207
>        retval = <optimized out>
>#4  0x0000003aedba44c6 in QEventDispatcherGlib::processEvents (this=0x7fdf240008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
>        d = 0x7fdf24000900
>        canWait = <optimized out>
>        savedFlags = {i = 0}
>        result = <optimized out>
>#5  0x0000003aedb7510f in QEventLoop::processEvents (this=this@entry=0x7fdf7cc6be30, flags=...) at kernel/qeventloop.cpp:149
>        d = 0x7fdf240028f0
>#6  0x0000003aedb75398 in QEventLoop::exec (this=0x7fdf7cc6be30, flags=...) at kernel/qeventloop.cpp:204
>        d = 0x7fdf240028f0
>        locker = {val = 77377592}
>        app = 0x2663fa0
>#7  0x0000003aeda78650 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
>        d = 0x49cafb0
>        locker = {val = 77377592}
>        eventLoop = {<QObject> = {_vptr.QObject = 0x3aedec94f0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc4e460 "QObject", data = 0x3aedc4e500, extradata = 0x3aedec6a20}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedb8de70 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, d_ptr = {d = 0x7fdf240028f0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc573a0 "Qt", data = 0x3aedc5acc0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x3aedec6a00, stringdata = 0x3aedc60e20 "QEventLoop", data = 0x3aedc60e40, extradata = 0x3aedec9580}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedbd5b10 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}}
>        returnCode = <optimized out>
>#8  0x0000003aedb55b2f in QInotifyFileSystemWatcherEngine::run (this=0x49caf70) at io/qfilesystemwatcher_inotify.cpp:248
>        sn = {<QObject> = {_vptr.QObject = 0x3aedec97b0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc4e460 "QObject", data = 0x3aedc4e500, extradata = 0x3aedec6a20}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedb8de70 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, d_ptr = {d = 0x7fdf24002720}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc573a0 "Qt", data = 0x3aedc5acc0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x3aedec6a00, stringdata = 0x3aedc62020 "QSocketNotifier", data = 0x3aedc62060, extradata = 0x3aedec9840}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedbd5f90 <QSocketNotifier::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, sockfd = 19, sntype = QSocketNotifier::Read, snenabled = true}
>#9  0x0000003aeda7b5eb in QThreadPrivate::start (arg=0x49caf70) at thread/qthread_unix.cpp:307
>        __clframe = {__cancel_routine = 0x3aeda7a5d0 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x49caf70, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x49caf70
>        data = 0x49cb120
>#10 0x00000039e4007d14 in start_thread (arg=0x7fdf7cc6c700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf7cc6c700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140597847836416, 4901417157404991259, 0, 248623792128, 140597847836416, 4294967295, -4919147527556489445, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#11 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 3 (Thread 0x7fdf7fbc9700 (LWP 31883)):
>#0  0x00000039e34ea9e3 in select () at ../sysdeps/unix/syscall-template.S:82
>No locals.
>#1  0x00007fdfa0838fbd in floatsleep (secs=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:943
>        _save = 0x4089b40
>        t = {tv_sec = 1, tv_usec = 478043}
>        frac = <optimized out>
>#2  time_sleep (self=<optimized out>, args=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/timemodule.c:206
>        secs = 2
>#3  0x0000003a074dd0e1 in call_function (oparg=<optimized out>, pp_stack=0x7fdf7fbc8558) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4098
>        callargs = (2,)
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in function sleep>
>        w = <optimized out>
>        na = <optimized out>
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf74000ee8
>        x = <optimized out>
>#4  PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf74000d20, for file /usr/lib64/calibre/calibre/gui2/device.py, line 397, in run (self=<DeviceManager(allow_connect_slot=<FunctionDispatcher(q=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bbafa0>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bf10>, mutex=<thread.lock at remote 0x3e2d630>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bed0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.l...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf74000ef0
>        stack_pointer = <optimized out>
>        next_instr = 0x23fbb58 "\001qS"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf74000e98
>        freevars = 0x7fdf74000ee8
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x23b68b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x23fb9a4 "x@"
>        names = ('devices', 'run_startup', 'is_dynamically_controllable', 'dynamic_plugins', 'devices_initialized', 'set', 'keep_going', 'None', 'True', 'mount_connection_requests', 'get_nowait', 'Queue', 'Empty', 'call_shutdown_on_disconnect', 'do_connect', 'prints', 'traceback', 'print_exc', 'detect_device', 'next', 'False', 'current_job', 'device', 'set_progress_reporter', 'report_progress', 'run', 'time', 'sleep', 'sleep_time', 'shutdown')
>        consts = (None, 'device_kind', 'Unable to open %s as device (%s)')
>#5  0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=1, kws=0x7fdf74000c80, kwcount=0, defs=0x0, defcount=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x4089b40
>        x = <optimized out>
>        u = <optimized out>
>#6  0x0000003a074dc113 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf7fbc8808, func=<function at remote 0x2416488>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#7  call_function (oparg=<optimized out>, pp_stack=0x7fdf7fbc8808) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x2416488>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf74000c78
>        x = <optimized out>
>#8  PyEval_EvalFrameEx (f=<optimized out>, throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf74000c80
>        stack_pointer = <optimized out>
>        next_instr = 0x112beea "\001Wn\a\001\004t\016"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec564b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x112be44 "z\322\001|"
>        names = ('_set_ident', '_Thread__started', 'set', '_active_limbo_lock', '_active', '_Thread__ident', '_limbo', '_note', '_trace_hook', '_sys', 'settrace', '_profile_hook', 'setprofile', 'run', 'SystemExit', 'stderr', 'write', 'name', '_format_exc', '_Thread__exc_info', '_Thread__stderr', 'tb_frame', 'f_code', 'co_filename', 'tb_lineno', 'co_name', 'tb_next', '_Thread__exc_clear', '_Thread__stop', '_get_ident')
>        consts = (None, '%s.__bootstrap(): thread started', '%s.__bootstrap(): registering trace hook', '%s.__bootstrap(): registering profile hook', '%s.__bootstrap(): raised SystemExit', '%s.__bootstrap(): unhandled exception', 'Exception in thread %s:\n%s\n', 'Exception in thread ', ' (most likely raised during interpreter shutdown):', 'Traceback (most recent call last):', '  File "%s", line %s, in %s', '%s: %s', '%s.__bootstrap(): normal return')
>#9  0x0000003a074dcd51 in fast_function (nk=<optimized out>, na=1, n=<optimized out>, pp_stack=0x7fdf7fbc8a08, func=<function at remote 0x7fdf9ec625f0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4184
>        retval = 0x0
>        i = <optimized out>
>        fastlocals = <optimized out>
>        f = <optimized out>
>        tstate = 0x4089b40
>        stack = <optimized out>
>        co = <optimized out>
>        nd = 0
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = 0x0
>#10 call_function (oparg=<optimized out>, pp_stack=0x7fdf7fbc8a08) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x7fdf9ec625f0>
>        w = <optimized out>
>        na = 1
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x7fdf74000a90
>        x = <optimized out>
>#11 PyEval_EvalFrameEx (f=f@entry=Frame 0x7fdf74000910, for file /usr/lib64/python2.7/threading.py, line 524, in __bootstrap (self=<DeviceManager(allow_connect_slot=<FunctionDispatcher(q=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bbafa0>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bf10>, mutex=<thread.lock at remote 0x3e2d630>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bed0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.l...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x7fdf74000a98
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdf9ecc7ba0 "\001Wn#"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x7fdf74000a88
>        freevars = 0x7fdf74000a90
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdf9ec563b0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdf9ecc7b94 "y\016"
>        names = ('_Thread__bootstrap_inner', '_Thread__daemonic', '_sys', 'None')
>        consts = (None,)
>#12 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=args@entry=0x35d8da8, argcount=1, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0x4089b40
>        x = <optimized out>
>        u = <optimized out>
>#13 0x0000003a0746d796 in function_call (func=<function at remote 0x7fdf9ec62500>, arg=(<DeviceManager(allow_connect_slot=<FunctionDispatcher(q=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bbafa0>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bf10>, mutex=<thread.lock at remote 0x3e2d630>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bed0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thr...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/funcobject.c:526
>        result = <optimized out>
>        argdefs = <optimized out>
>        kwtuple = 0x0
>        d = 0x0
>        k = 0x0
>        nk = 0
>        nd = 0
>#14 0x0000003a07449a7e in PyObject_Call (func=func@entry=<function at remote 0x7fdf9ec62500>, arg=arg@entry=(<DeviceManager(allow_connect_slot=<FunctionDispatcher(q=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bbafa0>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bf10>, mutex=<thread.lock at remote 0x3e2d630>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bed0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thr...(truncated), kw=kw@entry=0x0) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a0746d6e0 <function_call>
>#15 0x0000003a07458070 in instancemethod_call (func=<function at remote 0x7fdf9ec62500>, arg=(<DeviceManager(allow_connect_slot=<FunctionDispatcher(q=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bbafa0>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bf10>, mutex=<thread.lock at remote 0x3e2d630>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bed0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thr...(truncated), kw=0x0) at /usr/src/debug/Python-2.7.3/Objects/classobject.c:2578
>        self = <DeviceManager(allow_connect_slot=<FunctionDispatcher(q=<Queue(unfinished_tasks=0, queue=<collections.deque at remote 0x3bbafa0>, maxsize=0, all_tasks_done=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bf10>, mutex=<thread.lock at remote 0x3e2d630>, not_full=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thread.lock object at remote 0x3e2d630>) at remote 0x3e3bed0>, not_empty=<_Condition(_Verbose__verbose=False, _Condition__lock=<thread.lock at remote 0x3e2d630>, acquire=<built-in method acquire of thread.lock object at remote 0x3e2d630>, _Condition__waiters=[], release=<built-in method release of thre...(truncated)
>        klass = <optimized out>
>        result = <optimized out>
>#16 0x0000003a07449a7e in PyObject_Call (func=func@entry=<instancemethod at remote 0x35cb1e0>, arg=arg@entry=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Objects/abstract.c:2529
>        result = <optimized out>
>        call = 0x3a07457fd0 <instancemethod_call>
>#17 0x0000003a074d71c7 in PyEval_CallObjectWithKeywords (func=<instancemethod at remote 0x35cb1e0>, arg=(), kw=<optimized out>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3967
>        result = <optimized out>
>#18 0x0000003a0750b432 in t_bootstrap (boot_raw=0x4085030) at /usr/src/debug/Python-2.7.3/Modules/threadmodule.c:614
>        boot = 0x4085030
>        tstate = 0x4089b40
>        res = <optimized out>
>#19 0x00000039e4007d14 in start_thread (arg=0x7fdf7fbc9700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf7fbc9700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140597897500416, 4901417157404991259, 0, 248623792128, 140597897500416, 0, -4919149504852058341, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#20 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 2 (Thread 0x7fdf8ce1b700 (LWP 31871)):
>#0  0x00000039e34e8bcf in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
>        resultvar = <optimized out>
>        oldtype = 0
>        result = <optimized out>
>#1  0x00000039e7c47af4 in g_main_context_poll (n_fds=1, fds=0x7fdf780013e0, timeout=9999, context=0x7fdf780009c0, priority=<optimized out>) at gmain.c:3440
>        poll_func = 0x39e7c55910 <g_poll>
>#2  g_main_context_iterate (context=context@entry=0x7fdf780009c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3141
>        max_priority = 2147483647
>        timeout = 9999
>        some_ready = <optimized out>
>        nfds = 1
>        allocated_nfds = <optimized out>
>        fds = 0x7fdf780013e0
>#3  0x00000039e7c47c14 in g_main_context_iteration (context=0x7fdf780009c0, may_block=1) at gmain.c:3207
>        retval = <optimized out>
>#4  0x0000003aedba44c6 in QEventDispatcherGlib::processEvents (this=0x7fdf780008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
>        d = 0x7fdf78000900
>        canWait = <optimized out>
>        savedFlags = {i = 0}
>        result = <optimized out>
>#5  0x0000003aedb7510f in QEventLoop::processEvents (this=this@entry=0x7fdf8ce1ae60, flags=...) at kernel/qeventloop.cpp:149
>        d = 0x7fdf78002920
>#6  0x0000003aedb75398 in QEventLoop::exec (this=0x7fdf8ce1ae60, flags=...) at kernel/qeventloop.cpp:204
>        d = 0x7fdf78002920
>        locker = {val = 66694024}
>        app = 0x2663fa0
>#7  0x0000003aeda78650 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
>        d = 0x3f9ab00
>        locker = {val = 66694024}
>        eventLoop = {<QObject> = {_vptr.QObject = 0x3aedec94f0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc4e460 "QObject", data = 0x3aedc4e500, extradata = 0x3aedec6a20}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedb8de70 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, d_ptr = {d = 0x7fdf78002920}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc573a0 "Qt", data = 0x3aedc5acc0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x3aedec6a00, stringdata = 0x3aedc60e20 "QEventLoop", data = 0x3aedc60e40, extradata = 0x3aedec9580}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedbd5b10 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}}
>        returnCode = <optimized out>
>#8  0x0000003aeda7b5eb in QThreadPrivate::start (arg=0x3f9a7c0) at thread/qthread_unix.cpp:307
>        __clframe = {__cancel_routine = 0x3aeda7a5d0 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x3f9a7c0, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x3f9a7c0
>        data = 0x3f9ac70
>#9  0x00000039e4007d14 in start_thread (arg=0x7fdf8ce1b700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fdf8ce1b700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140598118037248, 4901417157404991259, 0, 248623792128, 140598118037248, 66684936, -4919534788114571493, 4933302993929838363}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = 0
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>#10 0x00000039e34f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>No locals.
>
>Thread 1 (Thread 0x7fdfa9083740 (LWP 31800)):
>#0  0x0000003a0000003a in ?? ()
>No symbol table info available.
>#1  0x00007fdf9db2c815 in sipOMFindObject (om=om@entry=0x7fdf9dd33e00, key=<optimized out>, td=td@entry=0x7fdf9e190ee0) at objmap.c:139
>        unaliased = 0x7fdf88736830
>        he = <optimized out>
>        sw = 0x5c420b0
>        py_type = 0x1197b30
>#2  0x00007fdf9db1f9a2 in sip_api_get_pyobject (cppPtr=<optimized out>, td=td@entry=0x7fdf9e190ee0) at siplib.c:7724
>No locals.
>#3  0x00007fdf9db21a54 in sip_api_convert_from_type (cpp=0x7fdf88736830, td=0x7fdf9e190ee0, transferObj=0x0) at siplib.c:8111
>        py = <optimized out>
>#4  0x00007fdf9db221db in buildObject (obj=obj@entry=(<Completer(completer_widget=<weakref at remote 0x13bb0838>, max_visible_items=7) at remote 0x7fdf8890d9e0>, 0x0), fmt=<optimized out>, fmt@entry=0x7fdf9deec2af "DD", va=va@entry=0x7fff0934a098) at siplib.c:2092
>        p = <optimized out>
>        td = <optimized out>
>        xfer = <optimized out>
>        el = <optimized out>
>        ch = <optimized out>
>        termch = 0 '\000'
>        i = <optimized out>
>#5  0x00007fdf9db22730 in sip_api_call_method (isErr=0x0, method=<instancemethod at remote 0xf4fcd20>, fmt=0x7fdf9deec2af "DD") at siplib.c:1750
>        args = (<Completer(completer_widget=<weakref at remote 0x13bb0838>, max_visible_items=7) at remote 0x7fdf8890d9e0>, 0x0)
>        res = <optimized out>
>        va = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7fff0934a1a8, reg_save_area = 0x7fff0934a0b0}}
>#6  0x00007fdf9ddc527e in sipVH_QtCore_18 (sipGILState=PyGILState_UNLOCKED, sipMethod=<instancemethod at remote 0xf4fcd20>, a0=<optimized out>, a1=<optimized out>) at sipQtCorecmodule.cpp:4559
>        sipRes = false
>        resObj = <optimized out>
>#7  0x00007fdf9d4d2123 in sipQListView::eventFilter (this=0x2fb07e0, a0=0x2fb07e0, a1=0x65b53e0) at sipQtGuiQListView.cpp:1817
>        sipGILState = PyGILState_UNLOCKED
>        sipMeth = <optimized out>
>#8  0x0000003aedb76526 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x2fb07e0, event=0x65b53e0) at kernel/qcoreapplication.cpp:1025
>        obj = 0x7fdf88736830
>        i = <optimized out>
>#9  0x0000003aee9ca34c in QApplicationPrivate::notify_helper (this=this@entry=0x14a3160, receiver=receiver@entry=0x2fb07e0, e=e@entry=0x65b53e0) at kernel/qapplication.cpp:4547
>        consumed = <optimized out>
>#10 0x0000003aee9ce7fa in QApplication::notify (this=0x2663fa0, receiver=0x2fb07e0, e=0x65b53e0) at kernel/qapplication.cpp:4412
>        d = 0x14a3160
>        res = false
>#11 0x00007fdf9d642446 in notify (a1=0x65b53e0, a0=0x2fb07e0, this=0x2663fa0) at sipQtGuiQApplication.cpp:292
>No locals.
>#12 sipQApplication::notify (this=0x2663fa0, a0=0x2fb07e0, a1=0x65b53e0) at sipQtGuiQApplication.cpp:284
>No locals.
>#13 0x0000003aedb763be in QCoreApplication::notifyInternal (this=0x2663fa0, receiver=receiver@entry=0x2fb07e0, event=event@entry=0x65b53e0) at kernel/qcoreapplication.cpp:915
>        threadData = 0x151c100
>        returnValue = <optimized out>
>        result = false
>        cbdata = {0x2fb07e0, 0x65b53e0, 0x7fff0934a66f}
>        d = <optimized out>
>#14 0x0000003aedb79e71 in sendEvent (event=0x65b53e0, receiver=0x2fb07e0) at kernel/qcoreapplication.h:231
>No locals.
>#15 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x151c100) at kernel/qcoreapplication.cpp:1539
>        pe = @0x919ec30: {receiver = 0x2fb07e0, event = 0x0, priority = -1}
>        e = 0x65b53e0
>        r = 0x2fb07e0
>        locker = {val = 22135112}
>        startOffset = 0
>        i = @0x151c13c: 1
>#16 0x0000003aedba4333 in sendPostedEvents () at kernel/qcoreapplication.h:236
>No locals.
>#17 postEventSourceDispatch (s=s@entry=0x1ff9c30) at kernel/qeventdispatcher_glib.cpp:279
>        source = 0x1ff9c30
>#18 0x00000039e7c47825 in g_main_dispatch (context=0x23d2f10) at gmain.c:2539
>        dispatch = 0x3aedba4320 <postEventSourceDispatch(GSource*, GSourceFunc, gpointer)>
>        was_in_call = 0
>        user_data = 0x0
>        callback = 0
>        cb_funcs = 0x0
>        cb_data = 0x0
>        current_source_link = {data = 0x1ff9c30, next = 0x0}
>        need_destroy = <optimized out>
>        source = 0x1ff9c30
>        current = 0x2664e70
>        i = <optimized out>
>#19 g_main_context_dispatch (context=context@entry=0x23d2f10) at gmain.c:3075
>No locals.
>#20 0x00000039e7c47b58 in g_main_context_iterate (context=context@entry=0x23d2f10, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3146
>        max_priority = 0
>        timeout = 0
>        some_ready = 1
>        nfds = <optimized out>
>        allocated_nfds = <optimized out>
>        fds = 0x50b3690
>#21 0x00000039e7c47c14 in g_main_context_iteration (context=0x23d2f10, may_block=1) at gmain.c:3207
>        retval = <optimized out>
>#22 0x0000003aedba44c6 in QEventDispatcherGlib::processEvents (this=0x2648bc0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
>        d = 0x2384870
>        canWait = <optimized out>
>        savedFlags = {i = 0}
>        result = <optimized out>
>#23 0x0000003aeea6a1ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
>        d = 0x2384870
>        saved_flags = {i = 0}
>        returnValue = 58
>#24 0x0000003aedb7510f in QEventLoop::processEvents (this=this@entry=0x7fff0934a980, flags=...) at kernel/qeventloop.cpp:149
>        d = 0x28eb770
>#25 0x0000003aedb75398 in QEventLoop::exec (this=0x7fff0934a980, flags=...) at kernel/qeventloop.cpp:204
>        d = 0x28eb770
>        locker = {val = 22137464}
>        app = 0x2663fa0
>#26 0x0000003aedb7a188 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
>        threadData = 0x151c100
>        eventLoop = {<QObject> = {_vptr.QObject = 0x3aedec94f0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc4e460 "QObject", data = 0x3aedc4e500, extradata = 0x3aedec6a20}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedb8de70 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}, d_ptr = {d = 0x28eb770}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x3aedc573a0 "Qt", data = 0x3aedc5acc0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x3aedec6a00, stringdata = 0x3aedc60e20 "QEventLoop", data = 0x3aedc60e40, extradata = 0x3aedec9580}}, static staticMetaObjectExtraData = {objects = 0x0, static_metacall = 0x3aedbd5b10 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>}}
>        returnCode = <optimized out>
>#27 0x00007fdf9d6410fb in meth_QApplication_exec_ (sipArgs=<optimized out>) at sipQtGuiQApplication.cpp:2232
>        _save = 0xedc0a0
>        sipRes = <optimized out>
>        sipParseErr = 0x0
>#28 0x0000003a074dd0e1 in call_function (oparg=<optimized out>, pp_stack=0x7fff0934ab98) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4098
>        callargs = ()
>        flags = <optimized out>
>        tstate = <optimized out>
>        func = <built-in method exec_ of Application object at remote 0x2624170>
>        w = <optimized out>
>        na = <optimized out>
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x278c600
>        x = <optimized out>
>#29 PyEval_EvalFrameEx (f=f@entry=Frame 0x278c420, for file /usr/lib64/calibre/calibre/gui2/main.py, line 299, in run_gui (opts=<Values(redirect=False, ignore_plugins=False, verbose=0, no_update_check=False, with_library=None, shutdown_running_calibre=False, start_in_tray=False) at remote 0x2634b00>, args=['/bin/calibre'], actions=(<QAction at remote 0x26245f0>, <QAction at remote 0x2624680>), listener=<Listener(_listener=<SocketListener(_address='/tmp/nice-calibre-gui.socket', _socket=<_socketobject at remote 0x2672050>, _family='AF_UNIX', _unlink=<Finalize(_key=(0, 0), _args=('/tmp/nice-calibre-gui.socket',), _weakref=<weakref at remote 0x262eaf8>, _callback=<built-in function unlink>, _kwargs={}) at remote 0x2680f10>, _last_accepted=None) at remote 0x2680ed0>, _authkey=None) at remote 0x2680e90>, app=<Application(file_event_hook=<functools.partial at remote 0x35db9f0>, _file_open_paths=[], original_font=<QFont at remote 0x26720c0>, _translator=<Translator at remote 0x26243b0>, pi=<module at remote 0x20646e0>, _file_open_lock=<_RLock(_Verbo...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x278c608
>        stack_pointer = <optimized out>
>        next_instr = 0x10bf454 "}\b"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x278c598
>        freevars = 0x278c600
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x1523630
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x10bf3e4 "t"
>        names = ('initialize_file_icon_provider', 'dynamic', 'get', 'False', 'calibre.gui2.wizard', 'wizard', 'exec_', 'set', 'True', 'GuiRunner', 'getattr', 'main', 'sys', 'executable', 'argv', 'run_in_debug_mode', 'subprocess', 'hasattr', 'os', 'path', 'dirname', 'frameworks_dir', 'Popen', 'iswindows', 'system_tray_icon', 'hide', 'None', 'win32process', 'CREATE_NO_WINDOW', 'gui_debug', 'open', 'devnull', 'PIPE')
>        consts = (None, 'welcome_wizard_was_run', -1, ('wizard',), 'gui_debug', 'run_wizard_b4_shutdown', 'restart_after_quit', 'frozen', 0, 'debug_on_restart', 'Restarting with:', 'frameworks_dir', 'sleep 3s; open ', 'shell', 1, '--show-gui-debug', 'creationflags', 'stdout', 'w', 'stderr', 'stdin', 'r')
>#30 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=5, kws=0x1f5c178, kwcount=1, defs=0x1552ba8, defcount=1, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0xedc0a0
>        x = <optimized out>
>        u = <optimized out>
>#31 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=5, n=<optimized out>, pp_stack=0x7fff0934ae48, func=<function at remote 0x1fb5848>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#32 call_function (oparg=<optimized out>, pp_stack=0x7fff0934ae48) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x1fb5848>
>        w = <optimized out>
>        na = 5
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x1f5c148
>        x = <optimized out>
>#33 PyEval_EvalFrameEx (f=f@entry=Frame 0x1f5bf80, for file /usr/lib64/calibre/calibre/gui2/main.py, line 425, in main (args=['/bin/calibre'], gui_debug=None, app=<Application(file_event_hook=<functools.partial at remote 0x35db9f0>, _file_open_paths=[], original_font=<QFont at remote 0x26720c0>, _translator=<Translator at remote 0x26243b0>, pi=<module at remote 0x20646e0>, _file_open_lock=<_RLock(_Verbose__verbose=False, _RLock__owner=None, _RLock__block=<thread.lock at remote 0x2571eb0>, _RLock__count=0) at remote 0x2635a10>) at remote 0x2624170>, opts=<Values(redirect=False, ignore_plugins=False, verbose=0, no_update_check=False, with_library=None, shutdown_running_calibre=False, start_in_tray=False) at remote 0x2634b00>, actions=(<QAction at remote 0x26245f0>, <QAction at remote 0x2624680>), singleinstance=<function at remote 0x7fdf9eca3230>, Listener=<type at remote 0x207bc00>, si=True, listener=<Listener(_listener=<SocketListener(_address='/tmp/nice-calibre-gui.socket', _socket=<_socketobject at remote 0x2672050>, _family='AF_UNIX', _unl...(truncated), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x1f5c188
>        stack_pointer = <optimized out>
>        next_instr = 0x106f056 "Sn"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x1f5c0f8
>        freevars = 0x1f5c148
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x152bbb0
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x106eee4 "d"
>        names = ('None', 'init_qt', 'AbortInit', 'calibre.utils.lock', 'singleinstance', 'multiprocessing.connection', 'Listener', 'shutdown_running_calibre', 'gui_socket_address', 'socket', 'error', 'iswindows', 'cant_start', 'os', 'path', 'exists', 'remove', 'run_gui', 'False', 'True', 'communicate')
>        consts = (None, 0, '__CALIBRE_GUI_DEBUG__', 1, 'calibre', -1, ('singleinstance',), ('Listener',), 'calibre GUI', 'address', 'gui_debug')
>#34 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=<optimized out>, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=argcount@entry=0, kws=0x106e718, kwcount=0, defs=0x1552c68, defcount=1, closure=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0xedc0a0
>        x = <optimized out>
>        u = <optimized out>
>#35 0x0000003a074dc113 in fast_function (nk=<optimized out>, na=0, n=<optimized out>, pp_stack=0x7fff0934b0f8, func=<function at remote 0x1fb5aa0>) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4194
>        co = <optimized out>
>        nd = <optimized out>
>        globals = <optimized out>
>        argdefs = <optimized out>
>        d = <optimized out>
>#36 call_function (oparg=<optimized out>, pp_stack=0x7fff0934b0f8) at /usr/src/debug/Python-2.7.3/Python/ceval.c:4119
>        func = <function at remote 0x1fb5aa0>
>        w = <optimized out>
>        na = 0
>        nk = <optimized out>
>        n = <optimized out>
>        pfunc = 0x106e710
>        x = <optimized out>
>#37 PyEval_EvalFrameEx (f=f@entry=Frame 0x106e590, for file /bin/calibre, line 20, in <module> (), throwflag=throwflag@entry=0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:2740
>        sp = 0x106e718
>        stack_pointer = <optimized out>
>        next_instr = 0x7fdfa9065f20 "\203\001"
>        opcode = <optimized out>
>        oparg = <optimized out>
>        why = WHY_NOT
>        err = 0
>        x = <optimized out>
>        v = <optimized out>
>        w = <optimized out>
>        u = <optimized out>
>        t = <optimized out>
>        stream = 0x0
>        fastlocals = 0x106e708
>        freevars = 0x106e708
>        retval = 0x0
>        tstate = <optimized out>
>        co = 0x7fdfa8d3e030
>        instr_ub = -1
>        instr_lb = 0
>        instr_prev = -1
>        first_instr = 0x7fdfa9065e64 "d"
>        names = ('__doc__', 'sys', 'os', 'environ', 'get', 'path', 'insert', 'resources_location', 'extensions_location', 'executables_location', 'calibre.gui2.main', 'main', 'exit')
>        consts = ("\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n", -1, None, 'CALIBRE_PYTHON_PATH', '/usr/lib64/calibre', 0, 'CALIBRE_RESOURCES_PATH', '/usr/share/calibre', 'CALIBRE_EXTENSIONS_PATH', '/usr/lib64/calibre/calibre/plugins', 'CALIBRE_EXECUTABLES_PATH', '/usr/bin', ('main',))
>#38 0x0000003a074ddb1f in PyEval_EvalCodeEx (co=co@entry=0x7fdfa8d3e030, globals=globals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}, locals=locals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}, args=args@entry=0x0, argcount=argcount@entry=0, kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0, closure=closure@entry=0x0) at /usr/src/debug/Python-2.7.3/Python/ceval.c:3330
>        f = <optimized out>
>        retval = 0x0
>        fastlocals = <optimized out>
>        freevars = <optimized out>
>        tstate = 0xedc0a0
>        x = <optimized out>
>        u = <optimized out>
>#39 0x0000003a074ddbf2 in PyEval_EvalCode (co=co@entry=0x7fdfa8d3e030, globals=globals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}, locals=locals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}) at /usr/src/debug/Python-2.7.3/Python/ceval.c:689
>No locals.
>#40 0x0000003a074f6b9a in run_mod (mod=<optimized out>, filename=filename@entry=0x7fff0934bcc0 "/bin/calibre", globals=globals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}, locals=locals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}, flags=flags@entry=0x7fff0934b370, arena=arena@entry=0x103c4d0) at /usr/src/debug/Python-2.7.3/Python/pythonrun.c:1361
>        co = 0x7fdfa8d3e030
>        v = <optimized out>
>#41 0x0000003a074f7992 in PyRun_FileExFlags (fp=fp@entry=0x106ba80, filename=filename@entry=0x7fff0934bcc0 "/bin/calibre", start=start@entry=257, globals=globals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}, locals=locals@entry={'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}, closeit=closeit@entry=1, flags=flags@entry=0x7fff0934b370) at /usr/src/debug/Python-2.7.3/Python/pythonrun.c:1347
>        ret = <optimized out>
>        mod = <optimized out>
>        arena = 0x103c4d0
>#42 0x0000003a074f83ab in PyRun_SimpleFileExFlags (fp=fp@entry=0x106ba80, filename=0x7fff0934bcc0 "/bin/calibre", closeit=1, flags=flags@entry=0x7fff0934b370) at /usr/src/debug/Python-2.7.3/Python/pythonrun.c:951
>        m = <optimized out>
>        d = {'__builtins__': <module at remote 0x7fdfa9043ad0>, '__file__': '/bin/calibre', '__package__': None, 'sys': <module at remote 0x7fdfa9043b78>, 'path': '/usr/lib64/calibre', '__name__': '__main__', 'main': <function at remote 0x1fb5aa0>, 'os': <module at remote 0x7fdfa9009cc8>, '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n"}
>        v = <optimized out>
>        ext = <optimized out>
>        set_file_name = 1
>        ret = <optimized out>
>        len = <optimized out>
>#43 0x0000003a074f8fe9 in PyRun_AnyFileExFlags (fp=fp@entry=0x106ba80, filename=<optimized out>, closeit=<optimized out>, flags=flags@entry=0x7fff0934b370) at /usr/src/debug/Python-2.7.3/Python/pythonrun.c:755
>No locals.
>#44 0x0000003a07509882 in Py_Main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/Python-2.7.3/Modules/main.c:639
>        c = <optimized out>
>        sts = <optimized out>
>        command = 0x0
>        filename = 0x7fff0934bcc0 "/bin/calibre"
>        module = 0x0
>        fp = 0x106ba80
>        p = <optimized out>
>        unbuffered = 0
>        skipfirstline = 0
>        stdin_is_interactive = 1
>        help = <optimized out>
>        version = <optimized out>
>        saw_unbuffered_flag = <optimized out>
>        cf = {cf_flags = 0}
>#45 0x00000039e3421735 in __libc_start_main (main=0x4006c0 <main>, argc=2, ubp_av=0x7fff0934b528, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0934b518) at libc-start.c:226
>        result = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 4901417157404991259, 4196040, 140733347837216, 0, 0, -4901246223903547621, 4933291433294241563}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x39e300eee0, 0xa8b62d4}, data = {prev = 0x0, cleanup = 0x0, canceltype = -486478112}}}
>        not_first_call = <optimized out>
>#46 0x00000000004006f1 in _start ()
>No symbol table info available.
>From                To                  Syms Read   Shared Object Library
>0x0000003a0743efd0  0x0000003a0751e560  Yes         /lib64/libpython2.7.so.1.0
>0x00000039e4005790  0x00000039e4010494  Yes         /lib64/libpthread.so.0
>0x00000039e3c00ea0  0x00000039e3c019e0  Yes         /lib64/libdl.so.2
>0x0000003a01600ee0  0x0000003a01601814  Yes         /lib64/libutil.so.1
>0x00000039e38055f0  0x00000039e386ca4c  Yes         /lib64/libm.so.6
>0x00000039e341ef60  0x00000039e355f780  Yes         /lib64/libc.so.6
>0x00000039e3000b20  0x00000039e301a319  Yes         /lib64/ld-linux-x86-64.so.2
>0x00007fdfa8d46720  0x00007fdfa8d48de4  Yes         /usr/lib64/python2.7/lib-dynload/stropmodule.so
>0x00007fdfa8afd040  0x00007fdfa8afeae4  Yes         /usr/lib64/python2.7/lib-dynload/operator.so
>0x00007fdfa88f3370  0x00007fdfa88f58dc  Yes         /usr/lib64/python2.7/lib-dynload/_collectionsmodule.so
>0x00007fdfa86e4ee0  0x00007fdfa86e9958  Yes         /usr/lib64/python2.7/lib-dynload/itertoolsmodule.so
>0x00007fdfa84dfc60  0x00007fdfa84e02a4  Yes         /usr/lib64/python2.7/lib-dynload/_bisectmodule.so
>0x00007fdfa82dad60  0x00007fdfa82dbd34  Yes         /usr/lib64/python2.7/lib-dynload/_heapq.so
>0x00007fdfa80cc130  0x00007fdfa80d26ac  Yes         /usr/lib64/python2.7/site-packages/rpm/_rpmmodule.so
>0x0000003c6be127c0  0x0000003c6be4b678  Yes         /lib64/librpm.so.2
>0x00000039e5005fc0  0x00000039e5016768  Yes         /lib64/libselinux.so.1
>0x00000039e6c01500  0x00000039e6c02c34  Yes         /lib64/libcap.so.2
>0x00000039f9801f50  0x00000039f9805dc4  Yes         /lib64/libacl.so.1
>0x00000039e842de50  0x00000039e8568348  Yes         /lib64/libdb-5.2.so
>0x0000003c6ba0b100  0x0000003c6ba20920  Yes         /lib64/librpmio.so.2
>0x00007fdfa7da1ac0  0x00007fdfa7e84a04  Yes         /lib64/libnss3.so
>0x00000039ed0016f0  0x00000039ed00d2c0  Yes         /lib64/libbz2.so.1
>0x00000039e4401f50  0x00000039e440e718  Yes         /lib64/libz.so.1
>0x00000039edc02af0  0x00000039edc0fa24  Yes         /lib64/libelf.so.1
>0x00000039f3e01cc0  0x00000039f3e07104  Yes         /lib64/libpopt.so.0
>0x00000039ee0030b0  0x00000039ee019320  Yes         /lib64/liblzma.so.5
>0x00000039f4a06f30  0x00000039f4a21778  Yes         /lib64/liblua-5.1.so
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>0x00007fdf93821fa0  0x00007fdf93898a60  Yes         /usr/lib64/kde4/plugins/styles/oxygen.so
>0x00007fdf935eedf0  0x00007fdf935fedcc  Yes         /lib64/liboxygenstyle.so.4
>0x00000039f0001350  0x00000039f0002d6c  Yes         /lib64/libXdmcp.so.6
>0x00007fdf929d2460  0x00007fdf929d5460  Yes         /usr/lib64/qt4/plugins/imageformats/libqgif.so
>0x00007fdf927cb850  0x00007fdf927ce60c  Yes         /usr/lib64/qt4/plugins/imageformats/libqico.so
>0x00007fdf925c5120  0x00007fdf925c7b30  Yes         /usr/lib64/qt4/plugins/imageformats/libqjpeg.so
>0x00007fdf923bec30  0x00007fdf923c01d0  Yes         /usr/lib64/qt4/plugins/imageformats/libqmng.so
>0x00007fdf92125570  0x00007fdf9216c544  Yes         /lib64/libmng.so.1
>0x00007fdf91f0a960  0x00007fdf91f0be88  Yes         /usr/lib64/qt4/plugins/imageformats/libqsvg.so
>0x00007fdf91d05450  0x00007fdf91d06930  Yes         /usr/lib64/qt4/plugins/imageformats/libqtga.so
>0x00007fdf91afeb20  0x00007fdf91b018c0  Yes         /usr/lib64/qt4/plugins/imageformats/libqtiff.so
>0x00007fdf918f75d0  0x00007fdf918faa10  Yes         /usr/lib64/kde4/plugins/imageformats/kimg_dds.so
>0x00007fdf916f0120  0x00007fdf916f3460  Yes         /usr/lib64/kde4/plugins/imageformats/kimg_eps.so
>0x00007fdf914e9df0  0x00007fdf914eb130  Yes         /usr/lib64/kde4/plugins/imageformats/kimg_exr.so
>0x00000039ef402360  0x00000039ef403d00  Yes         /lib64/libImath.so.6
>0x00000039ef82dba0  0x00000039ef86c9bc  Yes         /lib64/libIlmImf.so.6
>0x00000039eec12700  0x00000039eec16954  Yes         /lib64/libIex.so.6
>0x00007fdf912a4a60  0x00007fdf912a4f34  Yes         /lib64/libHalf.so.6
>0x00000039efc02f80  0x00000039efc0433c  Yes         /lib64/libIlmThread.so.6
>0x00007fdf910a1610  0x00007fdf910a29c0  Yes         /usr/lib64/kde4/plugins/imageformats/kimg_jp2.so
>0x00007fdf90e51ad0  0x00007fdf90e856cc  Yes         /lib64/libjasper.so.1
>0x00007fdf90c40c00  0x00007fdf90c44520  Yes         /usr/lib64/kde4/plugins/imageformats/kimg_pcx.so
>0x00007fdf90a3b610  0x00007fdf90a3cd9c  Yes         /usr/lib64/kde4/plugins/imageformats/kimg_pic.so
>0x00007fdf9
>Timeout exceeded: 240 seconds, killing gdb.
>Looks like gdb hung while generating backtrace.
>This may be a bug in gdb. Consider submitting a bug report to gdb developers.
>Please attach coredump from this crash to the bug report if you do.

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Attachments on bug 871246: 635294 | 635295 | 635296 | 635297 | 635298 | 635299 | 635300 | 635301 | 635302 | 635303 | 635304